TETRAPEPTIDE-9 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TETRAPEPTIDE-9
Safety grade: A
Tetrapeptide-9 is a small protein fragment made up of four amino acids linked together. It's designed to help improve skin's texture and appearance by supporting the skin's natural structure.
This ingredient conditions and softens the skin by helping to maintain hydration and support the skin's firmness and elasticity.
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