Hair Skin & Nails
Goals
$7.49 $0.37 per serving
Product analysis
Hair Skin & Nails supplies nutrients that may help maintain nails and hair when intake is low. Benefits are less clear when nutritional needs are already met.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality52
The nutrient forms are mixed in quality, with favorable D3 and active biotin alongside less favorable synthetic vitamin E. Several other forms remain too uncertain for a reliable comparison.
Ingredient Transparency72
All active ingredient amounts and most forms are disclosed. Several forms and the proportions of the calcium and vitamin D forms remain unspecified.
Value For Money40
Value is uneven across the ingredients. Phosphorus and some other nutrients compare favorably, while collagen, vitamin E and niacin offer less favorable value.
Customer Satisfaction88
Customer ratings are favorable. A very large review base gives that satisfaction pattern broad support.
Product Focus36
Nutritional support is clearer than a direct cosmetic benefit, especially when nutrient intake is low. Biotin has limited support for brittle nails, while the small collagen amount is below the exposure associated with the nail findings.
- Format
Tablet - Container
- 60 Tablet(s)
- Per serving
- $0.37
- Customer rating
- 4.6 · 27,867 ratings
Goals
Impact
High effect
Collagen · 50 mgBiotin · 3000 mcgHorsetail · 3 mg
Biotin provides the main nail-specific connection, with limited findings for brittleness and growth from small studies using 2500 mcg daily. This product supplies 3000 mcg per serving, without establishing extra benefit above that exposure. Zinc can help address nail changes caused by deficiency. The 50 mg collagen amount is well below the branded nail study exposure, and its preparation is not identified as equivalent.
How this product is rated for Nail Health
Ingredient fit52
Biotin provides the main connection to nail health. The amounts provide a mixed match to reference exposures; small or unresolved declarations limit the comparison.
Goal fit
Biotin provides the main nail connection, within a formula also aimed at other goals.
Dose adequacy
The amounts provide a mixed match to reference exposures; small or unresolved declarations limit the comparison.
Pathways70
The main connection is nutrients associated with nail formation, rather than proof of stronger or faster-growing nails. The connection is concentrated in one area of nail health.
Depth
The main connection is nutrients associated with nail formation, rather than proof of stronger or faster-growing nails.
Breadth
The connection is concentrated in one area of nail health.
Evidence100
Biotin has the leading nail-specific evidence connection, but small and often uncontrolled studies limit confidence.
Evidence strength
Biotin has the leading nail-specific evidence connection, but small and often uncontrolled studies limit confidence.
Studied preparation
The included preparations match the saved comparison, but this does not remove the limitations of the nail studies.
Formulation logic95
No missing required partner or configured conflict was identified. Vitamin E remains unresolved in the amount comparison.
Partner coverage
No missing required partner was identified; combining the ingredients does not establish an added nail benefit.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
Vitamin E has no usable amount for the minimum exposure comparison; the remaining included ingredients meet that comparison.
Horsetail Not classified
No linked studies yet.
Magnesium Not classified
No linked studies yet.
Impact
Moderate effect
Magnesium · 50 mgVitamin C · 60 mgZinc · 7.5 mgVitamin A · 5000 IUVitamin D · 1000 IU
Vitamin D at 25 mcg and zinc at 7.5 mg contribute to normal immune-cell function, while vitamin C supports antioxidant defenses. Folate and vitamins B6 and B12 add nutritional support, with the practical benefit most relevant when intake falls short.
How this product is rated for Immunity
Ingredient fit42
Relevant immune ingredients are present alongside ingredients serving other needs. Small or unresolved relevant amounts limit the contribution.
Goal fit
Relevant immune ingredients are present alongside ingredients serving other needs.
Dose adequacy
Small or unresolved relevant amounts limit the contribution.
Pathways45
Lymphocyte function and immune regulation is the strongest area of support in the saved findings. The saved findings show meaningful coverage of 1 aspect of immune support, with less coverage elsewhere.
Depth
Lymphocyte function and immune regulation is the strongest area of support in the saved findings.
Breadth
The saved findings show meaningful coverage of 1 aspect of immune support, with less coverage elsewhere.
Evidence100
Zinc provides the strongest relevant evidence at the assessed amount; normal nutritional function is distinct from preventing infections. The qualifying ingredients match preparations represented in the supplied evidence.
Evidence strength
Zinc provides the strongest relevant evidence at the assessed amount; normal nutritional function is distinct from preventing infections.
Studied preparation
The qualifying ingredients match preparations represented in the supplied evidence.
Formulation logic93
The assessed ingredients can contribute on their own or have their required partner present. No ingredient conflicts were identified in the saved assessment. Some ingredients had small or unresolved amounts, including Vitamin A, Vitamin E.
Partner coverage
The assessed ingredients can contribute on their own or have their required partner present.
Conflicts
No ingredient conflicts were identified in the saved assessment.
Effective doses
Some ingredients had small or unresolved amounts, including Vitamin A, Vitamin E.
Impact
Moderate effect
Biotin · 3000 mcgVitamin D · 1000 IUZinc · 7.5 mgVitamin C · 60 mgCollagen · 50 mg
Zinc may help when low zinc is contributing to diffuse hair shedding. That benefit concerns correcting low intake; taking extra zinc when you already get enough isn't known to promote regrowth.
How this product is rated for Hair Health
Ingredient fit50
Zinc may help shedding associated with low zinc, without a known regrowth benefit when intake is adequate.
Goal fit
The ingredients include zinc alongside nutrients with different roles; their presence doesn't imply an additional hair benefit.
Dose adequacy
Declared amounts vary across ingredients, and some provide less than the comparison amounts. This doesn't identify an effective personal hair regimen.
Pathways0
No specific hair-growth mechanism is linked to these ingredients here; this differs from proving that they cannot help.
Depth
No specific hair-growth mechanism is linked to these ingredients here; this differs from proving that they cannot help.
Breadth
A broad effect across distinct causes of hair loss is unclear.
Evidence98
Zinc may help shedding associated with low zinc, without a known regrowth benefit when intake is adequate.
Evidence strength
Zinc may help shedding associated with low zinc, without a known regrowth benefit when intake is adequate.
Studied preparation
The relevant preparation comparisons don't change the limits of the hair benefit: zinc may help shedding associated with low zinc, without a known regrowth benefit when intake is adequate.
Formulation logic92
No particular ingredient conflict or missing partner is identified. Amount comparisons do not guarantee hair growth.
Partner coverage
No additional ingredient partner is required for the individual contributions described here.
Conflicts
No particular ingredient conflict is identified in this combination.
Effective doses
Some ingredients have small or unresolved amounts relative to the comparison quantities; their presence alone does not imply a meaningful hair benefit.
Horsetail Not classified
No linked studies yet.
Impact
High effect
Folate · 200 mcgVitamin B12 · 8 mcgVitamin D · 1000 IUMagnesium · 50 mgCollagen · 50 mgZinc · 7.5 mgVitamin C · 60 mg
B vitamins support normal energy metabolism, while folate and B12 contribute to blood formation. Vitamin D, calcium and magnesium contribute to bone nutrition, and zinc and vitamin C support normal immune functions when intake is low. Several of these amounts make smaller contributions than the B vitamins; their presence does not establish extra benefit when nutritional needs are already met.
How this product is rated for Everyday Health
Ingredient fit71
The formula includes relevant nutrients alongside ingredients aimed at other purposes. The contributing amounts vary, with some falling below the upper comparisons used in the saved result.
Goal fit
The formula includes relevant nutrients alongside ingredients aimed at other purposes.
Dose adequacy
The contributing amounts vary, with some falling below the upper comparisons used in the saved result.
Pathways80
The strongest recorded contribution concerns energy metabolism, with the breadth finding covering energy metabolism, blood formation and folate metabolism.
Depth
The strongest recorded contribution concerns energy metabolism.
Breadth
The recorded contributions extend to energy metabolism, blood formation and folate metabolism.
Evidence82
Vitamin B9 (Folate) leads the saved evidence finding. Preparation eligibility does not establish extra benefit beyond the supplied context.
Evidence strength
Vitamin B9 (Folate) provides the strongest eligible contribution; the supported health claim remains limited by its supplied nutritional or population context.
Studied preparation
The eligible contributing preparations match the saved preparation criteria; this does not establish superiority over other forms.
Formulation logic100
The contributing ingredients work independently or have their required partners present. No configured ingredient conflict was found in the supplied facts.
Partner coverage
The contributing ingredients work independently or have their required partners present.
Conflicts
No configured ingredient conflict was found in the supplied facts.
Effective doses
All ingredients retained for this finding meet its minimum amount comparison; this does not make every listed ingredient effective.
Impact
Lower effect
Zinc · 7.5 mgVitamin C · 60 mgCollagen · 50 mgVitamin E · 15 IU
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin A (Retinyl Palmitate) | 5000 IU | |
Vitamin C (Ascorbic Acid) | 60 mg | |
Vitamin D (Cholecalciferol, Vitamin D3) | 1000 IU | |
Vitamin E (DL-Alpha-Tocopheryl Acetate) | 15 IU | |
Thiamine (Thiamine Hydrochloride) | 5 mg | |
Riboflavin | 2 mg | |
Niacin (Niacinamide) | 25 mg | |
Vitamin B6 (Pyridoxine Hydrochloride) | 5 mg | |
Folic Acid | 200 mcg | |
Vitamin B12 (Cyanocobalamin) | 8 mcg | |
Biotin (D-Biotin) | 3000 mcg | |
Pantothenic Acid (D-Calcium Pantothenate) | 15 mg | |
Calcium (Calcium Carbonate, Dicalcium Phosphate) | 200 mg | |
Phosphorus (Dicalcium Phosphate) | 90 mg | |
Magnesium (Magnesium Oxide) | 50 mg | |
Zinc (Zinc Gluconate) | 7.5 mg | |
Manganese (Manganese Gluconate) | 2 mg | |
PABA | 10 mg | |
Choline Bitartrate | 10 mg | |
Inositol | 30 mg | |
Citrus Bioflavonoid/Rutin Complex | 38 mg | |
Horsetail powder | 3 mg | |
Collagen (hydrolyzed Gelatin) | 50 mg |
Phosphorus (Dicalcium Phosphate) · 90 mg OverallScore84
Each serving supplies 90 mg of phosphorus from dicalcium phosphate. The whole-product serving costs about $0.37.
How this ingredient is rated
Active Ingredient Quality & Bioavailability79
The phosphorus source is identified as dicalcium phosphate, a mineral phosphate.
Phosphorus Form Quality
dicalcium phosphate is the identified mineral source of phosphorus.
Form Disclosure Clarity
The phosphorus entry identifies dicalcium phosphate as its source.
Dose, Safety & Label Transparency80
The serving states 90 mg of phosphorus.
Dose Adequacy and Safety
The serving supplies 90 mg of phosphorus.
Elemental Dose Transparency
The phosphorus amount is stated as 90 mg per serving.
Value100
A whole-product serving costs about $0.37, a relatively low price.
Price Per Serving Efficiency
A whole-product serving costs about $0.37, a relatively low price.
Niacin (Niacinamide) · 25 mg OverallScore65
Each serving provides 25 mg of niacin at a high cost per serving. The form is niacinamide. The available information does not establish a no-flush claim.
How this ingredient is rated
Active Ingredient Quality & Bioavailability86
The niacin includes niacinamide.
Niacin Form & Goal Alignment
The niacin includes niacinamide.
Precursor Source Quality
The named form is niacinamide.
Dose, Safety & Label Transparency67
The serving provides 25 mg of niacin. A no-flush claim is not established.
Clarity of Chemical Form
The label names niacinamide as the form.
Form-Specific Dosage Efficacy
The serving contains 25 mg of niacin.
Flush Risk & Safety Labeling
The available information does not establish a no-flush claim.
Value20
The cost per serving is high.
Price Per Effective Serving
The cost per serving is high.
Biotin (D-Biotin) · 3000 mcg OverallScore86
Each serving provides 3000 mcg of biotin. The package cost also covers other vitamins and minerals. The label names D-biotin, the biologically active form. No artificial colors or sweeteners are indicated.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The label names D-biotin, the biologically active form. No artificial colors or sweeteners are indicated.
Biologically Active d-Biotin Isomer
The label names D-biotin, the biologically active form.
Excipient Purity
No artificial colors or sweeteners are indicated.
Dose, Safety & Label Transparency84
The label states 3000 mcg of biotin per serving.
Biotin Potency for Health Goals
A serving provides 3000 mcg of biotin.
Label Transparency & Exact Disclosure
The amount of biotin is clearly stated.
Value60
The package cost also covers other vitamins and minerals.
Price per 5,000 mcg Biotin
The package cost also covers other vitamins and minerals.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- A double-blind, placebo-controlled, randomised, clinical study on the effectiveness of collagen peptide on osteoarthritis.
- Efficacy and safety of native type II collagen in modulating knee osteoarthritis symptoms: a randomised, double-blind, placebo-controlled trial.
- Healing Process, Pain, and Health-Related Quality of Life in Patients with Venous Leg Ulcers Treated with Fish Collagen Gel: A 12-Week Randomized Single-Center Study.
- Efficacy and Safety of Dietary Undenatured Type II Collagen on Joint and Motor Function in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study.
- The use of a collagen matrix in hard-to-heal venous leg ulcers.
- Intakes of Folate, Vitamin B6, and Vitamin B12 in Relation to All-Cause and Cause-Specific Mortality: A National Population-Based Cohort.
- The responsiveness of plasma homocysteine to small increases in dietary folic acid: a primary care study.
- Associations of Serum Folate and Homocysteine Concentrations with All-Cause, Cardiovascular Disease, and Cancer Mortality in Men and Women in Korea: the Cardiovascular Disease Association Study.
- The concept of folic acid supplementation and its role in prevention of neural tube defect among pregnant women: PRISMA.
- Systematic review of adverse health outcomes associated with high serum or red blood cell folate concentrations.
- Perioperative systemic magnesium to minimize postoperative pain: a meta-analysis of randomized controlled trials.
- Long-term outcome after intravenous magnesium sulphate in suspected acute myocardial infarction: the second Leicester Intravenous Magnesium Intervention Trial (LIMIT-2).
- Association of magnesium sulfate use with mortality in critically ill patients with sepsis: a retrospective propensity score-matched cohort study.
- Hypomagnesemia and Mortality in Incident Hemodialysis Patients.
- The effects of magnesium supplementation on abnormal uterine bleeding, alopecia, quality of life, and acne in women with polycystic ovary syndrome: a randomized clinical trial.
- Oral Vitamin B12 versus Placebo for the Prevention of Chemotherapy-Induced Peripheral Neuropathy in Gynecological Cancer Patients: A Randomized, Double-Blind, Placebo-Controlled Trial.
- Vitamin B12 Supplementation in Diabetic Neuropathy: A 1-Year, Randomized, Double-Blind, Placebo-Controlled Trial.
- A single-center randomized controlled trial of local methylcobalamin injection for subacute herpetic neuralgia.
- Local Injection of Methylcobalamin Combined with Lidocaine for Acute Herpetic Neuralgia.
- The Effect of Vitamin B12 and Folic Acid Supplementation on Serum Homocysteine, Anemia Status and Quality of Life of Patients with Multiple Sclerosis.