Keratin protein fragments from wool or feathers; fills hair cortex damage; temporarily repairs split ends; film-forming on hair surface; not vegan; molecular weight determines penetration vs. surface coating; plant keratin alternatives emerging but not equivalent chemistry
Function & Common Use
Hair Conditioning / Film Former
Conditioner
Hair masks conditioners shampoos protein treatments
Animal (wool/feathers)
Concentration Limits
No limit
No limit
No specific 21 CFR cosmetic limit identified in source checked
No specific MFDS limit identified in source checked; verify if ingredient is used in a Korean functional cosmetic category
Pregnancy: No specific restriction identified in source checked; standard cosmetic use
Frequently Asked Questions
Is Hydrolyzed Keratin safe to use in skincare?
Hydrolyzed Keratin has a Low concern rating from The Clean Sheet. Keratin protein fragments from wool or feathers; fills hair cortex damage; temporarily repairs split ends; film-forming on hair surface; not vegan; molecular weight determines penetration vs. surface coating; plant keratin alternatives emerging but not equivalent chemistry
Is Hydrolyzed Keratin allowed in India?
Hydrolyzed Keratin is currently classified as "Permitted" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Hydrolyzed Keratin used for in cosmetics?
Hydrolyzed Keratin functions as: Hair Conditioning / Film Former. It is commonly found in: Hair masks conditioners shampoos protein treatments.
Regulatory Status
Identifiers
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