Common Name(s): N-stearoyl hydrolyzed keratin protein,conditioning surfactant,film-forming gentle
CAS Number: N/a
DESCRIPTION
What It Does: Provides combined gentle cleansing and keratin protein conditioning from n-acyl hydrolysed protein.
Why It's Used: Conditioning surfactant โ n-acyl hydrolysed keratin protein delivers both surfactant cleansing and protein conditioning simultaneously, with substantive protein deposition on hair or skin during rinse providing post-wash conditioning feel.
How It Works: Hydrolysed keratin protein + acyl chloride โ n-acyl protein sodium salt. dual function: surfactant + conditioner. protein deposition: substantive post-rinse. film-forming. gentle. hair: cuticle protein film. skin: moisture retention.
Typically Found In: Conditioning shampoos,protein-rich cleansers
TECHNICAL DETAILS
Primary Category: Active ingredient โ cosmetic active
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 2%โ15%
SOURCING & ETHICS
Vegan Status: No - animal-derived
Halal Status: Conditional - halal slaughter certificate required (species declaration and slaughter method)
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier. [audit 2026-07-29 rev2: name declares rendered fat or animal tissue; halal status depends on species and slaughter, neither of which is in the record. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
N-acyl protein surfactant substantive deposition: the hydrolysed keratin protein chain (mw 500-5000 da depending on hydrolysis degree) deposits on hair or skin during rinsing from the opposing charge gradient of the anionic acyl head and the positively charged amino acid residues in the protein chain. substantive deposition provides post-rinse conditioning from protein film formation on the surface โ a cleansing and conditioning dual function from one ingredient.
Last Verified: 2026-03-12
Primary Sources: Cosing database,n-acyl hydrolyzed keratin protein surfactant review