PEPSIN is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.
PEPSIN
Safety grade: A
Pepsin is a protein-digesting enzyme naturally found in the stomach that breaks down proteins. In cosmetics, it's used in a purified form to gently condition hair and skin.
Pepsin works as a conditioning agent by helping to break down and smooth protein structures on the hair and skin surface, leaving them softer and more manageable.
Graded using: COSING, FDA.
Last verified: May 26, 2026
Other Skin Conditioning ingredients
- TOCOPHEROL — Grade A
- PROPYLENE GLYCOL — Grade A**
- XANTHAN GUM — Grade A
- DIMETHICONE — Grade A
- TOCOPHERYL ACETATE — Grade A
- PANTHENOL — Grade A
- CAPRYLYL GLYCOL — Grade A
- ETHYLHEXYLGLYCERIN — Grade A