ACETYL TETRAPEPTIDE-17 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
ACETYL TETRAPEPTIDE-17
Safety grade: A
This is a small protein fragment made in a laboratory that is designed to help improve skin's firmness and elasticity. It works by signaling skin cells to produce more of their natural support structures.
This ingredient conditions and firms the skin by stimulating the production of collagen and elastin, which help maintain skin's youthful appearance and resilience.
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