Hydrolyzed
Keratin
Bioavailable protein supplement studied for supporting hair, skin, and nail health.
Hydrolyzed keratin is a protein supplement derived from animal sources like wool or feathers, processed into peptides for increased absorption. It is popular for improving structural health of hair, skin, and nails.
Main evidence relates to small clinical trials and mechanistic studies showing improvement in skin, nail, and hair parameters.
Supports hair strength and reduces hair loss
ModerateSupplementation with hydrolyzed keratin may improve hair strength, reduce breakage, and enhance shine, particularly in women with damaged hair.
Improves nail hardness and reduces brittleness
ModerateHydrolyzed keratin has been observed to strengthen brittle nails and enhance growth by promoting keratin matrix integrity.
Enhances skin hydration and elasticity
LimitedClinical use of hydrolyzed keratin is linked to improved skin moisture retention and a modest increase in elasticity.
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