Keratin

Keratin (CAS 68238-35-7), also known as hydrolyzed keratin, is a fibrous structural protein derived from animal sources including wool, feathers, and hair.

Where is Keratin used?

• Personal care and industrial: film-forming and moisturizing agent
• Hair care: hydrolyzed keratin penetrates the hair shaft to reduce breakage and improve tensile strength
• Skin care: humectant in creams and serums, improving moisture retention and surface smoothness
• Nail care: reinforces brittle nails by depositing a protective protein layer
• Pharmaceutical and wound-care: film-forming properties support tissue scaffolding and topical delivery systems
• It bonds to hair and skin surfaces to restore and reinforce damaged protein structures.

Good to know: Hydrolyzed grades are the most commercially prevalent for cosmetic formulation due to their solubility and ease of use. Protein content and degree of hydrolysis are the primary specification parameters buyers should confirm.

Commercial specifications

• Molecular weight fractions tailored to penetration depth requirements