Product Image

Skin Nails & Hair 2

MegaFood
4.6
★ ★ ★ ★ ★
(2736 ratings)
Vitamin B5 20 mg
Stinging Nettle 500 mg
Zinc 15 mg
Biotin 300 mcg
Product Image
Score75
A focused hair and skin formula with practical zinc, vitamin C, natural vitamin E, biotin, and nettle. Source duplication and premium cost are its main weaknesses.
How scoring works
Quantity:90 Tablet(s) • (45 servings)
Goals:
General Health
Immunity
Anti-Inflammatory Support
Skin Health
Hair Health

Score 75

A focused hair and skin formula with practical zinc, vitamin C, natural vitamin E, biotin, and nettle. Source duplication and premium cost are its main weaknesses.
How scoring works
$32.99($0.73 per serving)
Amazon
$ 32.99
Vitacost
$ 34.93
Walmart
$ 32.99
iHerb
$ 32.99
Report prices

Analysis

The formula supplies 15 mg zinc, 300 mcg biotin, 200 mg vitamin C, 20 mg natural vitamin E, selenium, and 500 mg organic nettle. These ingredients offer more practical hair and skin relevance than formulas built mainly around trace collagen.

P-5-P is a useful B6 form, and zinc uses a rice amino-acid chelate. Several nutrients appear with both food sources and chemical forms, however, making it unclear whether listed quantities are totals or duplicated source descriptions.

Two tablets suit users who want a focused nutrient-and-nettle product without high-dose biotin. It remains a premium choice and does not provide structural protein such as a meaningful collagen dose.

Who is it for
  • Adults seeking moderate-dose biotin with zinc
  • People interested in nettle for hair support
  • Users who prefer natural vitamin E and active B6
Best for
  • Hair and nail nutrient coverage
  • Zinc and antioxidant support
  • Combining biotin with nettle

Pros

  • Provides 500 mg organic nettle
  • Uses P-5-P and natural vitamin E
  • Includes 15 mg chelated zinc
  • Offers practical vitamin C and biotin amounts
  • Avoids extreme biotin dosing

Cons

  • Duplicated source listings blur total amounts
  • Premium cost compared with simpler nutrient formulas
  • No meaningful collagen or protein support
  • Requires two tablets

Warnings

  • Fifteen milligrams of zinc should be counted with other zinc supplements to avoid unnecessary long-term stacking.
  • Nettle may add to the effects of blood-pressure or glucose-lowering medicines, so monitored users should review the combination.
  • Biotin can interfere with some laboratory tests; disclose supplement use before blood work.

Nutrient quality

84 Highest impact

Useful nutrient forms and meaningful nettle and zinc doses create a focused formula. Repeated form entries modestly reduce confidence in total exposure.

.

Ingredient transparency

67 High impact

The active ingredients carry stated amounts and no proprietary blend obscures the formula. Duplicate form entries plus missing usage and excipient details reduce clarity.

.

Customer satisfaction

71 High impact

Aggregate satisfaction is strong and supported by an extensive evidence base. No firsthand experience details are supplied, so recurring complaints and purpose alignment cannot be checked.

.

Value for money

78 High impact

Useful core ingredients provide fair value despite some trade-offs. The package remains reasonably competitive.

.
Report analysis

Goals

General Health
General Health
Impact
Highest effect
B Goal FitA- Strength of SupportB CoverageB+ Formula Quality
Selenium · 50 mcgZinc · 15 mgVitamin C · 200 mg

Vitamin C, zinc, selenium, and several other vitamins provide credible support for basic antioxidant and nutrient needs. The 15 mg zinc amount is suitable for routine maintenance.

The formula is designed mainly for hair, skin, and nails, which makes its general-health coverage less complete than a balanced multinutrient product. Exact amounts and several useful forms are disclosed, although the zinc chelate is not characterized precisely and no copper is included.

Study evidence
Selenium Supportive 70 studies
Vitamin C Supportive 56 studies
Zinc Supportive 60 studies
Immunity
Immunity
Impact
High effect
B+ Goal FitB- Strength of SupportB+ CoverageB Formula Quality
Vitamin C · 200 mgZinc · 15 mgVitamin A · 600 mcg RAESelenium · 50 mcg

Vitamins A, C, and E plus zinc and selenium cover barrier integrity, antioxidant control, and immune-cell development. Zinc reaches the preferred immune amount, and active vitamin B6 supports broader nutrient quality.

Vitamin C remains below the focused benchmark, and the zinc chelate is not precisely identified. The formula is coherent for skin and hair support, but its nutrient pattern still provides meaningful secondary immune coverage.

Study evidence
Selenium Mixed 37 studies
Vitamin C Supportive 53 studies
Vitamin E Supportive 21 studies
Zinc Supportive 73 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
C+ Goal FitB- Strength of SupportB- CoverageC Formula Quality
Vitamin E · 20 mgVitamin C · 200 mg

Nettle leaf provides a situational anti-inflammatory botanical, while vitamins C and E, zinc, and selenium add antioxidant and immune support. The formula therefore covers several relevant pathways despite being designed primarily for skin, hair, and nails.

The 500 mg nettle amount is meaningful, but no extract standardization or active-marker content is provided. Duplicated food-source entries and beauty-focused nutrients add complexity without direct inflammatory-enzyme evidence.

Study evidence
Selenium Supportive 34 studies
Stinging Nettle Supportive 5 studies
Zinc Supportive 64 studies
Skin Health
Skin Health
Impact
High effect
C+ Goal FitB- Strength of SupportC CoverageB- Formula Quality
Zinc · 15 mgVitamin C · 200 mgSelenium · 50 mcgVitamin E · 20 mg

Vitamin C, natural vitamin E, zinc, selenium, and beta-carotene support collagen formation and antioxidant protection. Biotin and pantothenic acid add appendage-focused nutrition, while nettle has less established skin evidence.

Useful nutrient amounts create moderate depth, but the formula lacks collagen peptides, ceramides, or a hydration active. Its skin, hair, and nail focus is logical despite some indirect botanical padding.

Study evidence
Biotin Supportive 10 studies
Selenium Supportive 22 studies
Vitamin B5 Supportive 11 studies
Vitamin C Supportive 53 studies
Vitamin E Supportive 38 studies
Zinc Supportive 66 studies
Hair Health
Hair Health
Impact
High effect
C Goal FitC+ Strength of SupportC+ CoverageB Formula Quality
Biotin · 300 mcgZinc · 15 mgVitamin C · 200 mg

Biotin, zinc, vitamin C, selenium, and nettle create a reasonably focused hair-support formula. Zinc and vitamin C provide the clearest practical amounts, while natural vitamin E adds antioxidant support.

Biotin is modest for a dedicated beauty product, and benefit is most likely when a nutrient gap exists. The zinc chelate is not fully characterized and no copper is included for longer-term mineral balance.

Study evidence
Biotin Supportive 4 studies
Selenium Disputed 7 studies
Vitamin C Mixed 5 studies
Vitamin E No effect 3 studies
Zinc Supportive 22 studies
Testosterone Support
Testosterone Support
Impact
Moderate effect
C- Goal FitB Strength of SupportC- CoverageD- Formula Quality
Zinc · 15 mg

Zinc provides a foundational hormonal building block, while nettle offers uncertain free-hormone support. The formula is primarily designed for skin, hair, and nails and includes many nutrients unrelated to testosterone.

The 15 mg zinc amount is useful and its rice amino acid chelate is a reasonable form. Nettle leaf is unstandardized and is less directly relevant than the root preparations commonly used for male hormonal or prostate contexts.

Study evidence
Zinc Disputed 7 studies

Ingredients

IngredientAmount per serving
Vitamin A (Beta-Carotene, Carrot)
 600 mcg RAE
Vitamin C (organic Orange)
 200 mg
Vitamin E (D-Alpha-Tocopherol)
 20 mg
Vitamin B6 (Pyridoxal 5-Phosphate, organic Brown Rice)
 4 mg
Biotin (Brown Rice)
 300 mcg
Pantothenic Acid (Calcium D-Pantothenate, organic Brown Rice)
 20 mg
Zinc (Rice Amino Acid Chelate)
 15 mg
Selenium (S. cerevisiae)
 50 mcg
organic Nettle leaf
500 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
Vitamin B5 (Calcium D-Pantothenate, organic Brown Rice) · 20 mg OverallScore62
A Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value

D-calcium pantothenate is a stable, well-absorbed standard form of vitamin B5. The 20 mg serving meets basic needs but falls below a high-potency B5 range. The cost per standardized 500 mg amount is poor for this form and dose.

View ingredientView products
Stinging Nettle · 500 mg OverallScore60
D Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyD+ Value

Organic nettle leaf is clearly identified, but the skin and hair formula does not establish the collection's preferred leaf-use context. The raw-leaf amount is meaningful and fully disclosed without extract standardization. Its serving cost is somewhat elevated for an unstandardized powder.

View ingredientView products
Zinc (Rice Amino Acid Chelate) · 15 mg OverallScore59
D- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyF Value

Skin Nails & Hair 2 supplies zinc as rice amino acid chelate, leaving some uncertainty about its precise absorption profile. The 15 mg dose suits daily maintenance, although no copper is included. Its high serving cost makes it a weaker choice when zinc is the main priority.

View ingredientView products
Loading alternative details
76 Performance

Skin Nails & Hair 2

MegaFood
<p>Chelated zinc, active vitamin B6, natural vitamin E, biotin, selenium, and a substantial nettle amount closely match the original while using a cleaner set of clearly named forms. Nettle preparation details remain missing, and structural protein is not included.</p>
71 Performance

Hairfluence

ZHOU
<p>MSM, collagen, keratin, vitamin C, and biotin broaden coverage beyond the original’s nutrient-and-nettle approach. The structural ingredients are modest and the vitamin A amount is fairly aggressive, so the added breadth has meaningful trade-offs.</p>
76 Performance

Ortho Prostate

Protocol For Life Balance
<p>Zinc and a substantial nettle-root extract provide stronger depth in two of the original’s named collections, with pumpkin seed oil and lycopene adding complementary coverage. The prostate-oriented formula omits biotin and pantothenic acid, so it fits users prioritizing zinc and nettle rather than complete beauty support.</p>
72 Budget

Hair Volume

New Nordic
<p>Hair-focused biotin, pantothenic acid, zinc, methionine, and botanical extracts come at a lower serving cost. Zinc oxide and copper sulfate are basic forms, while concentrated biotin can interfere with some laboratory tests.</p>
76 Budget

Multivitamin plus 24 HR Immune Support

Sundown
<p>Lower serving cost preserves biotin and zinc while adding vitamin D and a substantial amount of vitamin C. Magnesium oxide, zinc oxide, and very small botanical amounts make it less focused on hair than the original.</p>
69 Budget

Liquid Collagen Complex Healthy Hair Skin & Nails Delicious Grape Flavor

RejuviCare
<p>Biotin, pantothenic acid, vitamin C, and hydrolyzed collagen retain a beauty-nutrition focus at a lower serving cost. The collagen amount is modest, and the formula drops the original’s zinc, selenium, nettle, and active vitamin B6.</p>
79 Value

Sublingual Liquid B-12 2000 mcg with B-Complex

Solgar
<p>A broad liquid B-complex supplies biotin, pantothenic acid, and active riboflavin with strong serving value. It lacks zinc, selenium, and nettle, while cyanocobalamin, pyridoxine, and unspecified folate reduce form quality.</p>
80 Value

Prostate Support

NOW
<p>Substantial nettle root and zinc provide focused coverage of two original collections at favorable serving value. Saw palmetto and lycopene are modest or incompletely standardized, and the formula does not replace biotin or pantothenic acid.</p>
77 Value

Prostate Essentials

Swanson
<p>Zinc picolinate, nettle, and several complementary prostate ingredients offer economical support for the zinc-and-nettle side of the original formula. Most non-zinc actives are modest or poorly characterized, and saw palmetto plus ginseng may raise bleeding risk with anticoagulant or antiplatelet medicines.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. The Role of Sesbania grandiflora-Derived Biotin and Bambusa arundinacea-Derived Silica Extracts in Promoting Hair, Skin, and Nail Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Study.
    Patel MN; Maheshvari J; Patel N · Cureus · 2025
    Randomized trial105 participantsSkin Health Hair Health forBiotin
  2. Interventions for infantile seborrhoeic dermatitis (including cradle cap).
    Victoire A; Magin P; Coughlan J; van Driel ML · The Cochrane database of systematic reviews · 2019
    Systematic review35 participants2 studies pooledSkin Health forBiotin
  3. The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? A Comparative Analysis of Clinical Efficacy versus Social Popularity.
    Soleymani T; Lo Sicco K; Shapiro J · Journal of drugs in dermatology : JDD · 2018
    Narrative reviewHair Health forBiotin
  4. Effects of Zinc Supplementation on Inflammatory Skin Diseases: A Systematic Review of the Clinical Evidence.
    Dhaliwal S; Nguyen M; Vaughn AR; Notay M; Chambers CJ; Sivamani RK · American journal of clinical dermatology · 2020
    Systematic review22 studies pooledSkin Health forZinc
  5. The effects of minoxidil, 1% pyrithione zinc and a combination of both on hair density: a randomized controlled trial.
    Berger RS; Fu JL; Smiles KA; Turner CB; Schnell BM; Werchowski KM; Lammers KM · The British journal of dermatology · 2003
    Randomized trial200 participantsHair Health forZinc
  6. Hair Loss and Zinc Deficiency: A Cross-Sectional Study.
    Liran O; Vered S; Cohen B; Shapiro Ben David S; Nakhleh A; Rahamim-Cohen D; Azuri J; Adler L · Healthcare (Basel, Switzerland) · 2025
    Cross-sectional study23,975 participantsHair Health forZinc
  7. Selenium and the course of mild Graves' orbitopathy.
    Marcocci C; Kahaly GJ; Krassas GE; Bartalena L; Prummel M; Stahl M; Altea MA; Nardi M; Pitz S; Boboridis K; Sivelli P; von Arx G; Mourits MP; Baldeschi L; Bencivelli W; Wiersinga W; European Group on Graves' Orbitopathy · The New England journal of medicine · 2011
    Randomized trial159 participantsAnti-Inflammatory Support forSelenium
  8. Effects of selenium supplementation on glucose homeostasis, inflammation, and oxidative stress in gestational diabetes: Randomized, double-blind, placebo-controlled trial.
    Asemi Z; Jamilian M; Mesdaghinia E; Esmaillzadeh A · Nutrition (Burbank, Los Angeles County, Calif.) · 2016
    Randomized trial70 participantsAnti-Inflammatory Support forSelenium
  9. Selenium Supplementation Affects Insulin Resistance and Serum hs-CRP in Patients with Type 2 Diabetes and Coronary Heart Disease.
    Farrokhian A; Bahmani F; Taghizadeh M; Mirhashemi SM; Aarabi MH; Raygan F; Aghadavod E; Asemi Z · Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme · 2017
    Randomized trial60 participantsAnti-Inflammatory Support forSelenium
  10. The effects of selenium supplementation on cardiovascular risk factors in patients with metabolic diseases ‒ A systematic review and meta-analysis of randomized controlled trials.
    Qiu W; Huang N; Zhang K; Qiu H; Guo Z; Han F; Sun X; Hou N; Kan C · Nutricion hospitalaria · 2026
    Meta-analysis656 participants11 studies pooledAnti-Inflammatory Support forSelenium
  11. Effects of Selenium Supplementation on Metabolic Status in Patients Undergoing for Coronary Artery Bypass Grafting (CABG) Surgery: a Randomized, Double-Blind, Placebo-Controlled Trial.
    Kamali A; Amirani E; Asemi Z · Biological trace element research · 2020
    Randomized trial33 participantsAnti-Inflammatory Support forSelenium
  12. The effect of hydro alcoholic Nettle (Urtica dioica) extracts on insulin sensitivity and some inflammatory indicators in patients with type 2 diabetes: a randomized double-blind control trial.
    Namazi N; Esfanjani AT; Heshmati J; Bahrami A · Pakistan journal of biological sciences : PJBS · 2012
    Randomized trial50 participantsAnti-Inflammatory Support forStinging Nettle
  13. Urtica Dioica Root Extract on Clinical and Biochemical Parameters in Patients with Benign Prostatic Hyperplasia, Randomized Controlled Trial.
    Akbar Karami A; Sheikhsoleimani M; Reza Memarzadeh M; Haddadi E; Bakhshpour M; Mohammadi N; Mehdi Mirhashemi S · Pakistan journal of biological sciences : PJBS · 2021
    Randomized trial60 participantsAnti-Inflammatory Support forStinging Nettle
  14. Safety, Tolerability, and Efficacy of Hox Alpha, a Dry Extract from Stinging Nettle Leaves versus OTC NSAIDs in Osteoarthritis: A Retrospective, Propensity-Matched 12-Week Analysis from the German Pain e-Registry (SIPHARO Study).
    Überall MA; Küster MA; Müller-Schwefe PCG; Müller-Schwefe GHH · Journal of pain research · 2026
    Cohort study2,146 participantsAnti-Inflammatory Support forStinging Nettle
  15. [Recommendations of the DGRh Committee on Complementary Medicine and Nutrition on the application of selected phytotherapeutic drugs and herbal medicines in rheumatology].
    Keyßer G; Seifert O; Frohne I; Michalsen A; Pfeil A; Reuß-Borst M; Sander O · Zeitschrift fur Rheumatologie · 2025
    Guideline / consensusAnti-Inflammatory Support forStinging Nettle
  16. Randomized controlled trial of nettle sting for treatment of base-of-thumb pain
    C Randall, H Randall, F Dobbs, C Hutton, H Sanders · Journal of the Royal Society of Medicine · 2000
    Randomized trial27 participantsAnti-Inflammatory Support forStinging Nettle
  17. Zinc decreases C-reactive protein, lipid peroxidation, and inflammatory cytokines in elderly subjects: a potential implication of zinc as an atheroprotective agent.
    Bao B; Prasad AS; Beck FW; Fitzgerald JT; Snell D; Bao GW; Singh T; Cardozo LJ · The American journal of clinical nutrition · 2010
    Randomized trial40 participantsAnti-Inflammatory Support forZinc
  18. Zinc Supplementation in Individuals with Prediabetes and type 2 Diabetes: a GRADE-Assessed Systematic Review and Dose-Response Meta-analysis.
    Nazari M; Nikbaf-Shandiz M; Pashayee-Khamene F; Bagheri R; Goudarzi K; Hosseinnia NV; Dolatshahi S; Omran HS; Amirani N; Ashtary-Larky D; Asbaghi O; Ghanavati M · Biological trace element research · 2024
    Meta-analysis23 studies pooledAnti-Inflammatory Support forZinc
  19. The Effects of Zinc Supplementation on C-Reactive Protein and Inflammatory Cytokines: A Meta-Analysis and Systematical Review.
    Ceylan MN; Akdas S; Yazihan N · Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research · 2022
    Meta-analysis73 studies pooledAnti-Inflammatory Support forZinc
  20. The Effects of Zinc Sulfate Supplementation on Serum Copeptin, C-Reactive Protein and Metabolic Markers in Zinc-Deficient Diabetic Patients on Hemodialysis: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Hosseini R; Montazerifar F; Shahraki E; Karajibani M; Mokhtari AM; Dashipour AR; Ferns GA; Jalali M · Biological trace element research · 2021
    Randomized trial46 participantsAnti-Inflammatory Support forZinc
  21. Zinc supplementation and cardiovascular disease risk factors: A GRADE-assessed systematic review and dose-response meta-analysis.
    Nazari M; Ashtary-Larky D; Nikbaf-Shandiz M; Goudarzi K; Bagheri R; Dolatshahi S; Omran HS; Amirani N; Ghanavati M; Asbaghi O · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2023
    Meta-analysis75 studies pooledAnti-Inflammatory Support forZinc
  22. Associations of selenium status with all-cause and cause-specific mortality: a systematic review and meta-analysis of cohort studies.
    Cui Z; Xie R; Lu X; Schomburg L; Brenner H; Schöttker B · Redox biology · 2025
    Meta-analysis95 participants20 studies pooledGeneral Health forSelenium
  23. Dietary Antioxidants, Circulating Antioxidant Concentrations, Total Antioxidant Capacity, and Risk of All-Cause Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Observational Studies.
    Jayedi A; Rashidy-Pour A; Parohan M; Zargar MS; Shab-Bidar S · Advances in nutrition (Bethesda, Md.) · 2019
    Meta-analysis507,251 participants41 studies pooledGeneral Health forSelenium
  24. The efficacy and safety of selenium supplementation versus placebo in the treatment of Graves' orbitopathy: A systematic review and meta-analysis of randomised controlled trials.
    Sharabati I; Qafesha RM; Hindawi MD; Amro S; Ayesh BM · Clinical endocrinology · 2024
    Meta-analysis4 studies pooledGeneral Health forSelenium
  25. Associations of plasma metal concentrations with the risks of all-cause and cardiovascular disease mortality in Chinese adults.
    Shi L; Yuan Y; Xiao Y; Long P; Li W; Yu Y; Liu Y; Liu K; Wang H; Zhou L; Yang H; Li X; He M; Wu T · Environment international · 2021
    Cohort study6,155 participantsGeneral Health forSelenium
  26. Updates on clinical studies of selenium supplementation in radiotherapy.
    Puspitasari IM; Abdulah R; Yamazaki C; Kameo S; Nakano T; Koyama H · Radiation oncology (London, England) · 2015
    Systematic review16 studies pooledGeneral Health forSelenium
  27. Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies.
    Aune D; Keum N; Giovannucci E; Fadnes LT; Boffetta P; Greenwood DC; Tonstad S; Vatten LJ; Riboli E; Norat T · The American journal of clinical nutrition · 2019
    Meta-analysis69 studies pooledGeneral Health forVitamin C
  28. Scientific Opinion on the substantiation of a health claim related to vitamin C and increasing non haem iron absorption pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusGeneral Health forVitamin C
  29. Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
    Sotomayor CG; Eisenga MF; Gomes Neto AW; Ozyilmaz A; Gans ROB; Jong WHA; Zelle DM; Berger SP; Gaillard CAJM; Navis GJ; Bakker SJ · Nutrients · 2018
    Cohort study598 participantsGeneral Health forVitamin C
  30. Associations of Serum Biomarkers of Fruit and Vegetable Intake With the Risk of Cause-Specific Mortality and All-Cause Mortality: A National Prospective Cohort Study.
    Pu L; Zhang R; Wang X; Zhao T; Sun H; Han L · Frontiers in nutrition · 2022
    Cohort study12,530 participantsGeneral Health forVitamin C
  31. Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norfolk prospective study: a prospective population study. European Prospective Investigation into Cancer and Nutrition.
    Khaw KT; Bingham S; Welch A; Luben R; Wareham N; Oakes S; Day N · Lancet (London, England) · 2001
    Cohort study19,496 participantsGeneral Health forVitamin C
  32. Effectiveness of sodium bicarbonate and zinc chloride mouthwashes in the treatment of oral mucositis and quality of life in patients with cancer under chemotherapy.
    Mohammadi F; Oshvandi K; Kamallan SR; Khazaei S; Ranjbar H; Ahmadi-Motamayel F; Gillespie M; Jenabi E; Vafaei SY · Nursing open · 2022
    Randomized trial144 participantsGeneral Health forZinc
  33. Zinc supplementation in young children with acute diarrhea in India.
    Sazawal S; Black RE; Bhan MK; Bhandari N; Sinha A; Jalla S · The New England journal of medicine · 1995
    Randomized trial937 participantsGeneral Health forZinc
  34. Associations of mortality with ocular disorders and an intervention of high-dose antioxidants and zinc in the Age-Related Eye Disease Study: AREDS Report No. 13.
    Clemons TE; Kurinij N; Sperduto RD; AREDS Research Group · Archives of ophthalmology (Chicago, Ill. : 1960) · 2004
    Randomized trial4,753 participantsGeneral Health forZinc
  35. Effects of zinc and probiotic co-supplementation on inflammation, gastrointestinal symptoms, quality of life, and mood in irritable bowel syndrome patients.
    Rezazadegan M; Soheilipour M; Amani R · Scientific reports · 2026
    Randomized trial84 participantsGeneral Health forZinc
  36. Effect of zinc sulfate supplementation on premenstrual syndrome and health-related quality of life: Clinical randomized controlled trial.
    Siahbazi S; Behboudi-Gandevani S; Moghaddam-Banaem L; Montazeri A · The journal of obstetrics and gynaecology research · 2018
    Randomized trial142 participantsGeneral Health forZinc
  37. Low serum biotinidase activity in children with valproic acid monotherapy.
    Schulpis KH; Karikas GA; Tjamouranis J; Regoutas S; Tsakiris S · Epilepsia · 2001
    Clinical trial125 participantsHair Health Skin Health forBiotin
  38. Vitamins A, B, C, and D: A Short Review for the Dermatologist.
    Coerdt KM; Goggins CA; Khachemoune A · Alternative therapies in health and medicine · 2021
    Narrative reviewHair Health forBiotin
  39. Beyond Efficacy: 0.6% Selenium Disulfide Shampoo Matches 2% Ketoconazole for Seborrheic Dermatitis with Superior Cosmesis.
    Farris PK; Barbosa V; Houshman EB; Kovylkina N · Journal of drugs in dermatology : JDD · 2026
    Randomized trial87 participantsHair Health forSelenium
  40. Selenium Disulfide-based shampoo applied for 4 weeks significantly improves dandruff and seborrheic dermatitis.
    Turcu G; Artenie C; Nowicka D; Arenbergerová M; Lazaridou E; Khobzei K; Ataseven A; Part M; Leclerc-Mercier S · European journal of dermatology : EJD · 2023
    Observational study1,407 participantsHair Health forSelenium
  41. A Comparative Randomized Clinical Study Assessing the Efficacy of a 1% Selenium Disulfide-Based Shampoo versus 2% Ketoconazole Shampoo in Subjects with Moderate to Severe Scalp Seborrheic Dermatitis.
    Barbosa V; Melo DF; Vañó-Galván S; Lutchmanen-Kolanthan V; Sant'Anna B; Leclerc-Mercier S; Reygagne P · Skin appendage disorders · 2025
    Randomized trial64 participantsHair Health forSelenium
  42. Changes of serum trace elements level in patients with alopecia areata: A meta-analysis.
    Jin W; Zheng H; Shan B; Wu Y · The Journal of dermatology · 2018
    Meta-analysis764 participantsHair Health forSelenium
  43. Scientific opinion on the tolerable upper intake level for selenium.
    EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA); Turck D; Bohn T; Castenmiller J; de Henauw S; Hirsch-Ernst KI; Knutsen HK; Maciuk A; Mangelsdorf I; McArdle HJ; Peláez C; Pentieva K; Siani A; Thies F; Tsabouri S; Vinceti M; Aggett P; Crous Bou M; Cubadda F; Ciccolallo L; de Sesmaisons Lecarré A; Fabiani L; Titz A; Naska A · EFSA journal. European Food Safety Authority · 2023
    Systematic reviewHair Health forSelenium
  44. Management of hair loss associated with endocrine therapy in patients with breast cancer: an overview.
    Karatas F; Sahin S; Sever AR; Altundag K · SpringerPlus · 2016
    Narrative reviewHair Health forVitamin C
  45. Elucidating causal relationships of diet-derived circulating antioxidants and the risk of non-scarring alopecia: A Mendelian randomization study.
    Ba Y; Shen L; Peng X; Zhang Y; Wang J · Medicine · 2024
    Methods validation study201,019 participantsHair Health forVitamin C
  46. Alterations of plasma antioxidants and mitochondrial DNA mutation in hair follicles of smokers.
    Liu CS; Chen HW; Lii CK; Tsai CS; Kuo CL; Wei YH · Environmental and molecular mutagenesis · 2002
    Observational studyHair Health forVitamin C
  47. Removal of synthetic hair dye using formamidine sulfinic acid and other sulfinate precursors.
    Hawkes JA; Lewis DM; Mama J; Murray J · International journal of cosmetic science · 2026
    Methods validation studyHair Health forVitamin C
  48. A Zinc Sulphate-Resistant Acrodermatitis Enteropathica Patient with a Novel Mutation in SLC39A4 Gene.
    Kilic M; Taskesen M; Coskun T; Gürakan F; Tokatli A; Sivri HS; Dursun A; Schmitt S; Küry S · JIMD reports · 2013
    Case reportHair Health forVitamin C
  49. Effects of tocotrienol supplementation on hair growth in human volunteers.
    Beoy LA; Woei WJ; Hay YK · Tropical life sciences research · 2014
    Randomized trial38 participantsHair Health forVitamin E
  50. Effects of dietary supplements on androgenetic alopecia: a systematic review and network meta-analysis.
    Zhou L; Zhu W; Chen Y · Frontiers in nutrition · 2026
    Meta-analysis1,658 participants19 studies pooledHair Health forVitamin E
  51. Evaluation of the Safety and Effectiveness of Nutritional Supplements for Treating Hair Loss: A Systematic Review.
    Drake L; Reyes-Hadsall S; Martinez J; Heinrich C; Huang K; Mostaghimi A · JAMA dermatology · 2023
    Systematic review30 studies pooledHair Health forVitamin E
  52. Incubatory environment of the scalp impacts pre-emergent hair to affect post-emergent hair cuticle integrity.
    Schwartz JR; Henry JP; Kerr KM; Flagler MJ; Page SH; Redman-Furey N · Journal of cosmetic dermatology · 2018
    Randomized trialHair Health forZinc
  53. A comparison of hair quality and cosmetic acceptance following the use of two anti-dandruff shampoos.
    Draelos ZD; Kenneally DC; Hodges LT; Billhimer W; Copas M; Margraf C · The journal of investigative dermatology. Symposium proceedings · 2006
    Randomized trial40 participantsHair Health forZinc
  54. BMI and levels of zinc, copper in hair, serum and urine of Turkish male patients with androgenetic alopecia.
    Ozturk P; Kurutas E; Ataseven A; Dokur N; Gumusalan Y; Gorur A; Tamer L; Inaloz S · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2015
    Case-control study216 participantsHair Health forZinc
  55. Analysis of serum zinc and copper concentrations in hair loss.
    Kil MS; Kim CW; Kim SS · Annals of dermatology · 2013
    Case-control study342 participantsHair Health forZinc
  56. Effects of selenium supplementation on selenoprotein gene expression and response to influenza vaccine challenge: a randomised controlled trial.
    Goldson AJ; Fairweather-Tait SJ; Armah CN; Bao Y; Broadley MR; Dainty JR; Furniss C; Hart DJ; Teucher B; Hurst R · PloS one · 2011
    Randomized trial119 participantsImmunity forSelenium
  57. Effect of selenium on immune response against hepatitis B vaccine with accelerated method in insulin-dependent diabetes mellitus patients.
    Janbakhsh A; Mansouri F; Vaziri S; Sayad B; Afsharian M; Rahimi M; Shahebrahimi K; Salari F · Caspian journal of internal medicine · 2013
    Randomized trial62 participantsImmunity forSelenium
  58. Chemoprevention trial of human hepatitis with selenium supplementation in China.
    Yu SY; Li WG; Zhu YJ; Yu WP; Hou C · Biological trace element research · 1990
    Non-randomized trial20,847 participantsImmunity forSelenium
  59. Selenium nanoparticles as adjunctive therapy in sepsis: A pilot randomized clinical trial.
    Gu WJ; Huang W; Zhao FZ; Yuan XK; Jin K; Chen JL; Zhang CY; Huang Y; He L; Zhuang H; Yin HY; Chen T · Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy · 2026
    Randomized trial70 participantsImmunity forSelenium
  60. Selenium supplementation in patients with autoimmune thyroiditis decreases thyroid peroxidase antibodies concentrations.
    Gärtner R; Gasnier BC; Dietrich JW; Krebs B; Angstwurm MW · The Journal of clinical endocrinology and metabolism · 2002
    Randomized trial70 participantsImmunity forSelenium
  61. Vitamin C and contribution to the normal function of the immune system: evaluation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusImmunity forVitamin C
  62. Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
    Sun L; Zhao JH; Fan WY; Feng B; Liu WW; Chen RQ; Ban C; Dang AG; Wang M; Luo KT; Zhou GY; Yu FF; Ba Y · Nutrition reviews · 2024
    Meta-analysis2,334 participants14 studies pooledImmunity forVitamin C
  63. Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
    Abioye AI; Bromage S; Fawzi W · BMJ global health · 2021
    Meta-analysisImmunity forVitamin C
  64. New evidence for antioxidant properties of vitamin C.
    Vojdani A; Bazargan M; Vojdani E; Wright J · Cancer detection and prevention · 2001
    Randomized trial20 participantsImmunity forVitamin C
  65. Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
    Calder PC; Kreider RB; McKay DL · Nutrients · 2025
    Systematic review13 studies pooledImmunity forVitamin C
  66. Vitamin E supplementation enhances cell-mediated immunity in healthy elderly subjects.
    Meydani SN; Barklund MP; Liu S; Meydani M; Miller RA; Cannon JG; Morrow FD; Rocklin R; Blumberg JB · The American journal of clinical nutrition · 1990
    Randomized trial32 participantsImmunity forVitamin E
  67. Immunomodulatory effects of palm-derived tocotrienol-rich fraction in healthy volunteers following influenza vaccination: A randomised clinical trial.
    Chen S; Ahmad B; Palanisamy UD; Hafid SRA; Selvaduray KR; Radhakrishnan AK · Nutrition research (New York, N.Y.) · 2026
    Randomized trial150 participantsImmunity forVitamin E
  68. Effects of supplementation with tocotrienol-rich fraction on immune response to tetanus toxoid immunization in normal healthy volunteers.
    Mahalingam D; Radhakrishnan AK; Amom Z; Ibrahim N; Nesaretnam K · European journal of clinical nutrition · 2011
    Randomized trialImmunity forVitamin E
  69. Vitamin E and beta-carotene supplementation and hospital-treated pneumonia incidence in male smokers.
    Hemilä H; Virtamo J; Albanes D; Kaprio J · Chest · 2004
    Randomized trial29,133 participantsImmunity forVitamin E
  70. Vitamin E supplementation and in vivo immune response in healthy elderly subjects. A randomized controlled trial.
    Meydani SN; Meydani M; Blumberg JB; Leka LS; Siber G; Loszewski R; Thompson C; Pedrosa MC; Diamond RD; Stollar BD · JAMA · 1997
    Randomized trial88 participantsImmunity forVitamin E
  71. Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: A systematic review and meta-analysis.
    Vlieg-Boerstra B; de Jong N; Meyer R; Agostoni C; De Cosmi V; Grimshaw K; Milani GP; Muraro A; Oude Elberink H; Pali-Schöll I; Roduit C; Sasaki M; Skypala I; Sokolowska M; van Splunter M; Untersmayr E; Venter C; O'Mahony L; Nwaru BI · Allergy · 2022
    Meta-analysis199,055 participants115 studies pooledImmunity forZinc
  72. Zinc supplementation reduces the incidence of acute lower respiratory infections in infants and preschool children: a double-blind, controlled trial.
    Sazawal S; Black RE; Jalla S; Mazumdar S; Sinha A; Bhan MK · Pediatrics · 1998
    Randomized trial609 participantsImmunity forZinc
  73. A randomized controlled trial of zinc supplementation in the treatment of acute respiratory tract infection in Thai children.
    Rerksuppaphol S; Rerksuppaphol L · Pediatric reports · 2020
    Randomized trial64 participantsImmunity forZinc
  74. The effect of zinc and vitamin A supplementation on immune response in an older population.
    Fortes C; Forastiere F; Agabiti N; Fano V; Pacifici R; Virgili F; Piras G; Guidi L; Bartoloni C; Tricerri A; Zuccaro P; Ebrahim S; Perucci CA · Journal of the American Geriatrics Society · 1998
    Randomized trial136 participantsImmunity forZinc
  75. The role of specific nutrients in preventing immune system and blood cell disorders: an umbrella review.
    Vecchietti A; Strano P; Minutolo G; Grieco V; Cappuccio G; Granvillano G; Confalonieri L; Briganti GL; Raso E; Chimienti M; Pellegrini M; Mercogliano M; Spatari G; Lugli C; Urbano T; Lorenzon A · Journal of preventive medicine and hygiene · 2026
    Systematic review13 studies pooledImmunity forZinc
  76. Evaluation of biophysical skin parameters and hair changes in patients with acne vulgaris treated with isotretinoin, and the effect of biotin use on these parameters.
    Aksac SE; Bilgili SG; Yavuz GO; Yavuz IH; Aksac M; Karadag AS · International journal of dermatology · 2021
    Non-randomized trial60 participantsSkin Health forBiotin
  77. Generalized seborrhoeic dermatitis. Clinical and therapeutic data of 25 patients.
    Messaritakis J; Kattamis C; Karabula C; Matsaniotis N · Archives of disease in childhood · 1976
    Non-randomized trial25 participantsSkin Health forBiotin
  78. Holocarboxylase synthetase deficiency: novel clinical and molecular findings.
    Tammachote R; Janklat S; Tongkobpetch S; Suphapeetiporn K; Shotelersuk V · Clinical genetics · 2010
    Case series4 participantsSkin Health forBiotin
  79. Comparative clinical trial of bifonazole solution versus selenium sulphide shampoo in the treatment of pityriasis versicolor.
    Chu AC · Dermatologica · 1985
    Randomized trial38 participantsSkin Health forSelenium
  80. Selenium supplementation and secondary prevention of nonmelanoma skin cancer in a randomized trial.
    Duffield-Lillico AJ; Slate EH; Reid ME; Turnbull BW; Wilkins PA; Combs GF; Park HK; Gross EG; Graham GF; Stratton MS; Marshall JR; Clark LC; Nutritional Prevention of Cancer Study Group · Journal of the National Cancer Institute · 2003
    Randomized trial1,312 participantsSkin Health forSelenium
  81. Evidence-Based Nutritional Interventions in Wound Care.
    Saeg F; Orazi R; Bowers GM; Janis JE · Plastic and reconstructive surgery · 2021
    Systematic review2,339 participants36 studies pooledSkin Health forSelenium Skin Health forVitamin E Skin Health forZinc
  82. A randomized, double-blind placebo-controlled trial evaluating the effects of vitamin E and selenium on arsenic-induced skin lesions in Bangladesh.
    Verret WJ; Chen Y; Ahmed A; Islam T; Parvez F; Kibriya MG; Graziano JH; Ahsan H · Journal of occupational and environmental medicine · 2006
    Randomized trial121 participantsSkin Health forSelenium
  83. The Whitening, Moisturizing, Anti-aging Activities, and Skincare Evaluation of Selenium-Enriched Mung Bean Fermentation Broth.
    Wei K; Guo C; Zhu J; Wei Y; Wu M; Huang X; Zhang M; Li J; Wang X; Wang Y; Wei X · Frontiers in nutrition · 2022
    Clinical trial31 participantsSkin Health forSelenium
  84. Dexpanthenol enhances skin barrier repair and reduces inflammation after sodium lauryl sulphate-induced irritation.
    Proksch E; Nissen HP · The Journal of dermatological treatment · 2009
    Randomized trialSkin Health forVitamin B5
  85. Comparative trial of 5% dexpanthenol in water-in-oil formulation with 1% hydrocortisone ointment in the treatment of childhood atopic dermatitis: a pilot study.
    Udompataikul M; Limpa-o-vart D · Journal of drugs in dermatology : JDD · 2012
    Non-randomized trial30 participantsSkin Health forVitamin B5
  86. Panthenyl triacetate transformation, stimulation of metabolic pathways, and wound-healing properties in the human skin.
    Dell'Acqua G; Schweikert K · Journal of cosmetic science · 2012
    Randomized trialSkin Health forVitamin B5
  87. Dexpanthenol modulates gene expression in skin wound healing in vivo.
    Heise R; Skazik C; Marquardt Y; Czaja K; Sebastian K; Kurschat P; Gan L; Denecke B; Ekanayake-Bohlig S; Wilhelm KP; Merk HF; Baron JM · Skin pharmacology and physiology · 2013
    Clinical trialSkin Health forVitamin B5
  88. A randomized, double-blind, placebo-controlled study of a novel pantothenic Acid-based dietary supplement in subjects with mild to moderate facial acne.
    Yang M; Moclair B; Hatcher V; Kaminetsky J; Mekas M; Chapas A; Capodice J · Dermatology and therapy · 2014
    Randomized trial48 participantsSkin Health forVitamin B5
  89. Evaluation of the anti-wrinkle effect of an ascorbic acid-loaded dissolving microneedle patch via a double-blind, placebo-controlled clinical study.
    Lee C; Yang H; Kim S; Kim M; Kang H; Kim N; An S; Koh J; Jung H · International journal of cosmetic science · 2017
    Randomized trial23 participantsSkin Health forVitamin C
  90. Comparative Study on the Outcome of Periorbital Wrinkles Treated with Laser-Assisted Delivery of Vitamin C or Vitamin C Plus Growth Factors: A Randomized, Double-blind, Clinical Trial.
    Machado BHB; Frame J; Zhang J; Najlah M · Aesthetic plastic surgery · 2021
    Randomized trial149 participantsSkin Health forVitamin C
  91. Randomized trial of topical ascorbic acid in DMSO versus imiquimod for the treatment of basal cell carcinoma.
    Burke B; Bailie JE · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022
    Randomized trial25 participantsSkin Health forVitamin C
  92. Vitamin C improves healing of foot ulcers: a randomised, double-blind, placebo-controlled trial.
    Gunton JE; Girgis CM; Lau T; Vicaretti M; Begg L; Flood V · The British journal of nutrition · 2022
    Randomized trial16 participantsSkin Health forVitamin C
  93. Dietary nutrient intakes and skin-aging appearance among middle-aged American women.
    Cosgrove MC; Franco OH; Granger SP; Murray PG; Mayes AE · The American journal of clinical nutrition · 2007
    Cross-sectional study4,025 participantsSkin Health forVitamin C
  94. Randomized controlled trial using vitamins E and D supplementation in atopic dermatitis.
    Javanbakht MH; Keshavarz SA; Djalali M; Siassi F; Eshraghian MR; Firooz A; Seirafi H; Ehsani AH; Chamari M; Mirshafiey A · The Journal of dermatological treatment · 2011
    Randomized trial45 participantsSkin Health forVitamin E
  95. Serum vitamin E levels and chronic inflammatory skin diseases: A systematic review and meta-analysis.
    Liu X; Yang G; Luo M; Lan Q; Shi X; Deng H; Wang N; Xu X; Zhang C · PloS one · 2022
    Meta-analysis20 studies pooledSkin Health forVitamin E
  96. Effects of tocotrienol on aging skin: A systematic review.
    Ghazali NI; Mohd Rais RZ; Makpol S; Chin KY; Yap WN; Goon JA · Frontiers in pharmacology · 2022
    Systematic reviewSkin Health forVitamin E
  97. Carotenoids and carotenoids plus vitamin E protect against ultraviolet light-induced erythema in humans.
    Stahl W; Heinrich U; Jungmann H; Sies H; Tronnier H · The American journal of clinical nutrition · 2000
    Randomized trialSkin Health forVitamin E
  98. Sex-related differences in response to zinc pyrithione shampoo vs. non-anti-dandruff shampoo.
    Collins LZ; Baines FL; Matheson JR; Turner GA; Diao Y; Li Y; Pi Y · International journal of cosmetic science · 2019
    Meta-analysis2,088 participants20 studies pooledSkin Health forZinc
  99. Maintenance of an Acidic Skin Surface with a Novel Zinc Lactobionate Emollient Preparation Improves Skin Barrier Function in Patients with Atopic Dermatitis.
    Andrew PV; Pinnock A; Poyner A; Brown K; Chittock J; Kay LJ; Cork MJ; Danby SG · Dermatology and therapy · 2024
    Cohort study23 participantsSkin Health forZinc
  100. Spatial expression of metallothionein, matrix metalloproteinase-1 and Ki-67 in human epidermal wounds treated with zinc and determined by quantitative immunohistochemistry: A randomised double-blind trial.
    Ågren MS; Chafranska L; Eriksen JO; Forman JL; Bjerrum MJ; Schjerling P; Larsen HF; Cottarelli E; Jorgensen LN; Gjerdrum LMR · European journal of cell biology · 2021
    Randomized trial30 participantsSkin Health forZinc
  101. A pilot trial using topical regular crystalline insulin vs. aqueous zinc solution for uncomplicated cutaneous wound healing: Impact on quality of life.
    Attia EA; Belal DM; El Samahy MH; El Hamamsy MH · Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 2014
    Randomized trial90 participantsSkin Health forZinc
  102. Environmental exposure to metals and male reproductive hormones: circulating testosterone is inversely associated with blood molybdenum.
    Meeker JD; Rossano MG; Protas B; Padmanahban V; Diamond MP; Puscheck E; Daly D; Paneth N; Wirth JJ · Fertility and sterility · 2010
    Cross-sectional study219 participantsTestosterone Support forZinc
  103. Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review.
    Santos HO; Cadegiani FA; Forbes SC · Clinical therapeutics · 2022
    Scoping reviewTestosterone Support forZinc
  104. Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization.
    Fallah A; Mohammad-Hasani A; Colagar AH · Journal of reproduction & infertility · 2020
    Narrative reviewTestosterone Support forZinc
  105. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  106. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc