RH-POLYPEPTIDE-66 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
RH-POLYPEPTIDE-66
Safety grade: A
RH-Polypeptide-66 is a lab-created chain of amino acids (the building blocks of protein) designed to improve skin texture and hydration. It works by helping the skin retain moisture and maintain a healthy appearance.
This ingredient conditions and softens the skin by improving moisture retention and promoting a smoother, more supple skin texture.
Graded using: COSING.
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