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Tres Beauty 3

Reserveage Beauty
4.6
★ ★ ★ ★ ★
(453 ratings)
Keratin 500 mg
Biotin 300 mcg
Copper 1.7 mg
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Score66
Targeted soluble keratin and added collagen offer good structural coverage, but hidden blend details, basic minerals, and high cost limit confidence.
How scoring works
Quantity:90 Capsule(s) • (30 servings)
Goals:
Nail Health
Hair Health

Score 66

Targeted soluble keratin and added collagen offer good structural coverage, but hidden blend details, basic minerals, and high cost limit confidence.
How scoring works
$42.23($1.40 per serving)
Pure Formulas
$ 52.79
Walmart
$ 42.23
iHerb
$ 59.65
Vitacost
$ 59.65
Amazon
$ 52.79
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Analysis

Five hundred milligrams of soluble keratin anchors the formula, with a one-gram collagen blend adding broader structural protein support. Biotin, zinc, copper, niacinamide, B6, and pantothenic acid cover several related nutrient pathways.

The keratin form and amount are useful, but collagen sources and proportions inside the blend are not supplied. Dermaval is named at 50 mg without enough component detail, while zinc oxide and copper sulfate are basic mineral choices.

Three capsules per serving and a high serving cost reduce convenience and value. The lower biotin amount is more restrained than many beauty formulas, making laboratory-test interference less prominent.

Who is it for
  • Adults seeking keratin plus collagen for hair and nails
  • People who prefer a more moderate biotin amount
Best for
  • Combined keratin and collagen support
  • Hair and nail structural nutrition

Pros

  • Provides 500 mg of soluble keratin
  • Includes a one-gram collagen blend
  • Biotin amount is more restrained than many beauty formulas

Cons

  • Collagen blend components are not disclosed
  • Dermaval composition is not explained
  • Three-capsule serving is relatively costly

Nutrient quality

80 High impact

Soluble keratin is specific, while zinc oxide and copper sulfate are basic forms. Collagen and keratin are supplied in meaningful amounts.

Ingredient transparency

58 Moderate impact

Nutrient and blend totals are shown, but the collagen and Dermaval components are not broken down. Inactive capsule ingredients are not supplied.

Customer satisfaction

67 High impact

The supplied average indicates generally favorable aggregate satisfaction. No detailed experience reports are available to identify repeated complaints or confirm perceived benefits.

Value for money

60 Moderate impact

Meaningful collagen and keratin support some of the premium cost. Serving value is only moderate because the daily cost is high.

Report analysis

Goals

Nail Health
Nail Health
Impact
Highest effect
A Goal FitA- Strength of SupportA CoverageA- Formula Quality
Biotin · 300 mcgKeratin · 500 mg

Soluble keratin, a collagen blend, biotin, zinc, and copper directly support nail structure and growth. The formula combines primary building material with several useful cofactors.

Keratin is supplied at a substantial amount, while the proprietary collagen blend does not disclose peptide type or individual composition. High-dose biotin may still interfere with some laboratory tests, though the amount is lower than in many dedicated products.

Study evidence
Biotin Supportive 8 studies
Keratin Adverse 7 studies
Zinc No effect 1 study
Hair Health
Hair Health
Impact
Highest effect
B+ Goal FitB+ Strength of SupportB+ CoverageB+ Formula Quality
Biotin · 300 mcgZinc · 15 mgKeratin · 500 mg

Soluble keratin, collagen, biotin, zinc, and copper provide broad structural and nutrient hair support. The branded keratin is the strongest direct active, while the proprietary collagen blend is harder to judge.

Keratin reaches a targeted amount and the mineral balance is reasonable, but some forms are basic. The three-capsule formula is coherent despite two proprietary blends.

Study evidence
Biotin Supportive 4 studies
Copper Adverse 4 studies
Keratin Disputed 14 studies
Zinc Supportive 22 studies

Ingredients

IngredientAmount per serving
Niacin (Niacinamide)
 18 mg NE
Vitamin B6 (Pyridoxine Hydrochloride)
 2 mg
Biotin
300 mcg
Pantothenic Acid (D-Calcium Pantothenate)
 14 mg
Zinc (Zinc Oxide)
 15 mg
Copper (Copper Sulfate)
 1.7 mg
RA Collagen Blend
1000 mg
Cynatine HNS (Soluble Keratin)
 500 mg
Dermaval
50 mg
Gluten Free Adults 18–50
Report overview
Keratin (Soluble Keratin) · 500 mg OverallScore92
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value

Branded soluble Cynatine HNS provides an absorption-focused form at a full targeted dose. The label clearly separates the keratin amount from the accompanying proprietary blends. Its high serving cost limits value despite the strong active quality.

View ingredientView products
Biotin · 300 mcg OverallScore56
B- Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyC Value

A clearly disclosed 300 mcg biotin amount supports basic nutrition, but the label does not verify the biologically active isomer. The amount is well below the range used for targeted hair and nail support. Value is best judged across the full multinutrient formula rather than from biotin alone.

View ingredientView products
Copper (Copper Sulfate) · 1.7 mg OverallScore53
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyF Value

Copper sulfate provides a clearly labeled but lower-quality inorganic source. The copper amount supports maintenance, and its zinc balance falls within the preferred range. A high serving cost limits value despite the included collagen, keratin, and beauty-focused blend.

View ingredientView products
Loading alternative details
92 Performance

Hair Skin & Nails Collagen Plus Formula

Life Extension
<p>Substantial collagen peptides and keratin directly strengthen hair, skin, and nail structural support. Basic mineral forms and a low silicon amount temper the otherwise focused, reasonably priced formula.</p>
84 Performance

Hair Ultra Softgels

OLLY
<p>Keratin, biotin, vitamin D3, zinc, and silicon provide a focused formula with fully disclosed doses. Keratin and silicon are modest, and very high biotin may interfere with laboratory tests.</p>
79 Performance

Hair Skin and Nails

Dr. Mercola
<p>Keratin and high-dose biotin provide direct structural support in a focused formula. The keratin source is unclear, hyaluronic acid is very low, and high biotin can distort thyroid and cardiac laboratory tests.</p>
58 Budget

One Daily Women's

Equate
<p>Practical daily vitamins and minerals include biotin, iron, calcium, and copper at a very low serving cost. The formula lacks keratin and collagen, while iron is unnecessary for users without increased iron needs.</p>
60 Budget

One Daily Women's

21st Century
<p>A broad daily nutrient profile supplies biotin and copper at a fraction of the serving cost. It does not provide keratin or collagen, and supplemental iron may not suit users without an iron need.</p>
80 Budget

Hair Skin & Nails

Nature Made
<p>Biotin, beta-carotene, vitamin C, zinc, and copper create a concise beauty formula at very low serving cost. Oxide minerals reduce form quality, and high biotin can interfere with laboratory tests.</p>
85 Value

Heavenly Hair Tropical Citrus

OLLY
<p>D-biotin, zinc citrate, silica, horsetail, keratin, and amla provide broad hair and nail support at lower serving cost. Keratin and botanical extracts are light, while high biotin can interfere with laboratory tests.</p>
82 Value

Longer Stronger Hair and Nails

Irwin Naturals
<p>Buffered vitamin C, useful mineral forms, biotin, horsetail, amino acids, and flax oil provide a broad hair-focused alternative at lower serving cost. Lysine and proline are modest and horsetail lacks complete silica detail.</p>
69 Value

Hair Multivitamin

California Gold Nutrition
<p>High-dose biotin, evening primrose oil, and several supporting nutrients create broad hair and nail coverage. Trace collagen, amino acids, and hyaluronic acid plus cupric oxide weaken value despite a slightly lower serving cost than some source packages.</p>
Report alternatives

Sources

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

  1. The Effects of an Oral Supplementation of a Natural Keratin Hydrolysate on Skin Aging: A Randomized, Double-Blind, Placebo-Controlled Clinical Study in Healthy Women.
    Tursi F; Nobile V; Cestone E; De Ponti I; Lepoudere A; Sergheraert R; Soulard JP · Journal of cosmetic dermatology · 2025
    Randomized trialHair Health Nail Health forKeratin
  2. Comparative Analysis of Type I Keratin Expression By Nail Consistency: An Immunohistochemistry Study.
    Mingorance Álvarez E; Rodríguez-León J; Pérez Pico AM; Mayordomo R · Applied immunohistochemistry & molecular morphology : AIMM · 2022
    Cross-sectional study32 participantsNail Health forKeratin
  3. 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 participantsHair Health Nail Health forBiotin
  4. 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 forBiotin
  5. 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
  6. 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
  7. Menkes disease and response to copper histidine: An Indian case series.
    Yoganathan S; Sudhakar SV; Arunachal G; Thomas M; Subramanian A; George R; Danda S · Annals of Indian Academy of Neurology · 2022
    Case series4 participantsHair Health forCopper
  8. Trace element levels in alopecia areata.
    Bhat YJ; Manzoor S; Khan AR; Qayoom S · Indian journal of dermatology, venereology and leprology · 2009
    Case-control study100 participantsHair Health forCopper
  9. UV damage to hair and the effect of antioxidants and metal chelators.
    Millington KR; Marsh JM · International journal of cosmetic science · 2021
    In vitro / ex vivo studyHair Health forCopper
  10. Preserving fibre health: reducing oxidative stress throughout the life of the hair fibre.
    Marsh JM; Davis MG; Lucas RL; Reilman R; Styczynski PB; Li C; Mamak M; McComb DW; Williams RE; Godfrey S; Navqi KR; Chechik V · International journal of cosmetic science · 2016
    In vitro / ex vivo studyHair Health forCopper
  11. Halloysite/Keratin Nanocomposite for Human Hair Photoprotection Coating.
    Cavallaro G; Milioto S; Konnova S; Fakhrullina G; Akhatova F; Lazzara G; Fakhrullin R; Lvov Y · ACS applied materials & interfaces · 2021
    In vitro / ex vivo studyHair Health forKeratin
  12. Annurca Apple Nutraceutical Formulation Enhances Keratin Expression in a Human Model of Skin and Promotes Hair Growth and Tropism in a Randomized Clinical Trial.
    Tenore GC; Caruso D; Buonomo G; D'Avino M; Santamaria R; Irace C; Piccolo M; Maisto M; Novellino E · Journal of medicinal food · 2018
    Randomized trialHair Health forKeratin
  13. Keratin/alginate hybrid hydrogels filled with halloysite clay nanotubes for protective treatment of human hair.
    Cavallaro G; Caruso MR; Milioto S; Fakhrullin R; Lazzara G · International journal of biological macromolecules · 2022
    In vitro / ex vivo studyHair Health forKeratin
  14. Patient Satisfaction and Adverse Effects Following the use of Topical Hair Fiber Fillers.
    Babadjouni A; Juhasz M; Pham C; Csuka E; Hedayati B; Evron E; Mesinkovska NA · International journal of trichology · 2024
    Cross-sectional study40 participantsHair Health forKeratin
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. Biotin for the treatment of nail disease: what is the evidence?
    Lipner SR; Scher RK · The Journal of dermatological treatment · 2018
    Narrative reviewNail Health forBiotin
  21. Treatment of brittle fingernails and onychoschizia with biotin: scanning electron microscopy.
    Colombo VE; Gerber F; Bronhofer M; Floersheim GL · Journal of the American Academy of Dermatology · 1991
    Other32 participantsNail Health forBiotin
  22. Treatment of brittle nail with a hydroxypropyl chitosan-based lacquer, alone or in combination with oral biotin: A randomized, assessor-blinded trial.
    Chiavetta A; Mazzurco S; Secolo MP; Tomarchio G; Milani M · Dermatologic therapy · 2020
    Randomized trial50 participantsNail Health forBiotin
  23. Vitamins and minerals: their role in nail health and disease.
    Scheinfeld N; Dahdah MJ; Scher R · Journal of drugs in dermatology : JDD · 2007
    Narrative reviewNail Health forBiotin Nail Health forZinc
  24. Exposure to toxic agents alters organic elemental composition in human fingernails.
    Schumacher E; Dindorf W; Dittmar M · The Science of the total environment · 2009
    Cross-sectional study120 participantsNail Health forKeratin
  25. Human keratin diseases: hereditary fragility of specific epithelial tissues.
    Corden LD; McLean WH · Experimental dermatology · 1997
    Narrative reviewNail Health forKeratin
  26. Phenotype and genotype features of Vietnamese children with pachyonychia congenita.
    Chu HT; Dinh Duong TA; Le DH; Le TV; Nguyen BB; Dang CV; Vu QV · Pediatrics and neonatology · 2023
    Case series7 participantsNail Health forKeratin