NONAPEPTIDE-6 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
NONAPEPTIDE-6
Safety grade: A
Nonapeptide-6 is a short chain of amino acids (the building blocks of proteins) that is designed to help improve skin texture and firmness. It works by mimicking natural proteins in the skin to support its structure and elasticity.
This ingredient is used in skincare products to condition and firm the skin by supporting its natural protein structure, helping to improve skin tone and reduce the appearance of fine lines.
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