Hair Collagen + Keratin by youtheory — Ingredients, Evidence & Safety

Product Label

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Label Data

6 Tablet(s) Serving Size

20 Servings

Other Combinations Product Type

67% Evidence Coverage

Supplement Facts — Evidence Check

Biotin

3000 mcg (10000% DV)

📊 100.0× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 3.0mg

hydrolyzed Collagen

3000 mg

📊 Market median: 20.0mg (931 products) 📚 233 studies (Tier A: 1, B: 90)

This product: 3000mg

hydrolyzed Keratin

500 mg

Other Ingredients

Magnesium Stearate Silicon Dioxide

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (95% of products) Nutrient (80% of products)

Target Groups

Adult (18 - 50 Years) Women (not pregnant or lactating)

Product Information

📋 Directions for Use

Suggested use: Take six (6) mini tablets per day, all at once or in divided doses.

⚠️ Warnings & Precautions

This product is manufactured in a facility that processes fish extracts.

Usage Warnings: Check with your doctor before using this product if you are taking medication or have any medical conditions. Do not use if you are pregnant or nursing.

Do not exceed the recommended daily intake.

Not intended for persons under 18. Keep out of reach of children.

🧪 Formulation Notes

A powerful blend of collagen and keratin to nourish and revitalize hair from within.

Collagen is a key structural component of hair follicles. Keratin is a key structural component of the hair shaft. Clinically supported Reduces hair loss Supports stronger hair Replenishes collagen

This product is formulated for efficacy using clinically-supported ingredients.

Additional Information

Store in a cool and dry place after opening.

Associated with every day washing and brushing.

Product Details

UPC / SKU 8 50502 00784 3

DSLD Entry Date 2021-11-19

Product Type Other Combinations

Form Tablet or Pill

Brand youtheory

DSLD ID 256983

Data Updated 2026-04-11

Research Evidence

281 Research Sources

54 Avg Quality Score

141 Meta Analysis

72 Systematic Review

45 Rct

18 Clinical Trial

2 Narrative Review

1 Other

1 Guideline

1 Openfda Safety

A Vascular closure devices for femoral arterial puncture site haemostasis

Meta Analysis The Cochrane database of systematic reviews 2016

PubMed DOI

B Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis

Meta Analysis Nutrients 2023

PubMed DOI

B Transepithelial versus epithelium-off corneal crosslinking for progressive keratoconus

Meta Analysis The Cochrane database of systematic reviews 2021

PubMed DOI

B Bisphosphonate therapy for osteogenesis imperfecta

Meta Analysis The Cochrane database of systematic reviews 2014

PubMed DOI

B Punctal occlusion for dry eye syndrome

Meta Analysis The Cochrane database of systematic reviews 2017

PubMed DOI

B Dressings and topical agents containing hyaluronic acid for chronic wound healing

Systematic Review The Cochrane database of systematic reviews 2023

PubMed DOI

B Efficacy of statins for osteoporosis: a systematic review and meta-analysis

Meta Analysis Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA 2017

PubMed DOI

B Drugs to reduce bleeding and transfusion in major open vascular or endovascular surgery: a systematic review and network meta-analysis

Systematic Review The Cochrane database of systematic reviews 2023

PubMed DOI

B Bisphosphonate therapy for osteogenesis imperfecta

Meta Analysis The Cochrane database of systematic reviews 2008

PubMed DOI

B Bisphosphonates for osteoporosis in primary biliary cirrhosis

Meta Analysis The Cochrane database of systematic reviews 2011

PubMed DOI

View all evidence for Collagen →