ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

  • About Us
  • Our Methodology
  • Contact
  • Blog
  • Authors

Legal

  • Privacy Policy
  • Terms of Service
  • Medical Disclaimer
  • Affiliate Disclosure

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2025 ProveIt Supplements. All rights reserved.

Medical Disclaimer: The information provided is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen.

Prove It
Browse SupplementsBlogAuthorsAboutMethodologyFAQ
Get Your Personalized Supplement StackSupplement Stack Quiz
Menu
HomeBrowse SupplementsBlogAuthorsAboutMethodologyFAQ
Keratin 50 mg

Keratin 50 mg

Swanson

#Other
58
Safety90
Efficacy25
Transparency85
Based on Examine, Wikipedia, and 23 other sources

Overview

The supplement is marketed to support hair, skin, and nail health via keratin supplementation. However, the evidence regarding its efficacy is largely inconclusive. Research is limited and lacks the rigor necessary to confirm the benefits of keratin supplementation, especially through oral intake. There is also limited understanding of the bioavailability of oral keratin.

The Good

Generally considered safe

Easy to incorporate into supplement regimen

Few reported side effects in general population

The Bad

Limited scientific evidence of efficacy

Unclear benefits due to lack of clinical studies

Individual response variability

Is it for you?

Best For: Individuals seeking to improve hair, skin, and nail appearance; those with brittle nails or thinning hair.

Skip If: You have known allergies to product ingredients or are pregnant/nursing without consulting a doctor.

Ingredients Analysis

Keratin

50 mg

How to Use

Take one capsule daily with water, preferably with a meal.

Frequency:

Daily

Best Time:

Anytime

When:

With food

Who Should Use This

Best For:

Individuals seeking to improve hair, skin, and nail appearance; those with brittle nails or thinning hair.

Similar Products

Whey Protein by ACTN

Whey Protein

ACTN

WHEY ISOLATE by LIMITLESS PHARMA®

WHEY ISOLATE

LIMITLESS PHARMA®

WHEY ISOLATE by XXL Nutrition

WHEY ISOLATE

XXL Nutrition

Whey Isolate by Limitless Pharma

Whey Isolate

Limitless Pharma

Hydrolyzed Keratin with KeraGLO 500 mg by Doctor's Best

Hydrolyzed Keratin with KeraGLO 500 mg

Doctor's Best

Keratin Hair Booster by Reserveage Nutrition

Keratin Hair Booster

Reserveage Nutrition

Recommended Articles

Best Ingredients for Healthy Hair Growth

Best Ingredients for Healthy Hair Growth

Vitamins D, iron, zinc, and natural oils like rosemary are crucial for healthy hair growth.

Top Nutrients for Hair & Nail Health

Top Nutrients for Hair & Nail Health

Vitamins A, C, D, E, minerals like zinc and iron, and omega-3s are crucial for healthy hair and nails.

Best Bone Health Supplements for Women Over 55 in 2025

Best Bone Health Supplements for Women Over 55 in 2025

Calcium and vitamin D remain crucial for bone health at 55+, with new peptides and plant compounds also showing promise.