Hydrolyzed Collagen
HY-droh-lyzd KOL-ah-jen
What Is Hydrolyzed Collagen?
A protein derived from animal connective tissues (bovine, porcine, or marine) that has been broken down into small peptides. It provides moisture retention and mild strengthening to hair.
Source: Animal connective tissue or fish scales (hydrolyzed)
Origin: Natural
Also known as: Collagen Peptides, Marine Collagen, Collagen Protein
What Does Hydrolyzed Collagen Do to Your Hair?
Acts primarily as a humectant and film-former on hair rather than a structural protein. Draws moisture to hair and creates a flexible film that improves elasticity and volume. Adds body to fine, limp hair.
Best For
Fine hair, thin hair, dry hair, aging hair, limp hair
Not Recommended For
Protein-sensitive hair (in large amounts), vegan consumers
Concentration Matters
0.5-5% in hair products
Hair Type Compatibility
Method Compatibility
Safety & Regulation
Safe for cosmetic use with a long track record. Not vegan. Does not actually replace or repair hair collagen (hair contains very little collagen). Benefits are more about moisture and film-forming than structural repair.
FDA Status: Generally Recognized As Safe
FDA permits use in cosmetics without restrictions.
EWG Score: 1/10
HairAide Verdict
Useful for adding volume and moisture to hair, but do not expect it to replace hair proteins the way keratin does. Best for fine hair that needs body. The marketing often overpromises what collagen can do for hair.
Products That Contain Hydrolyzed Collagen
Volumizing products, conditioners, hair masks, anti-aging hair treatments
Alternatives to Hydrolyzed Collagen
If you want to avoid Hydrolyzed Collagen, look for products with these ingredients instead:
Hydrolyzed Silk, Hydrolyzed Rice Protein, Oat Protein
Frequently Asked Questions
Yes, Hydrolyzed Collagen has a safety rating of 8/10 and is generally considered safe for use in hair products. Safe for cosmetic use with a long track record. Not vegan. Does not actually replace or repair hair collagen (hair contains very little collagen). Benefits are more about moisture and film-forming than structural repair.
Hydrolyzed Collagen is not CG-method approved. Curly hair types may want to avoid this ingredient or use products containing it sparingly.
No, Hydrolyzed Collagen is not approved for the Curly Girl method.
Some alternatives to Hydrolyzed Collagen include: Hydrolyzed Silk, Hydrolyzed Rice Protein, Oat Protein
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