RH-POLYPEPTIDE-58 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
RH-POLYPEPTIDE-58
Safety grade: A
This is a lab-created protein fragment made up of amino acids (the building blocks of proteins) designed to support skin health. It works to strengthen and protect the skin's natural barrier.
This ingredient conditions and protects the skin by helping to reinforce the skin barrier, improve hydration retention, and defend against environmental stressors.
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