TETRAPEPTIDE-27 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TETRAPEPTIDE-27
Safety grade: A
Tetrapeptide-27 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 works as a skin conditioner to help soften, smooth, and improve the overall feel and appearance of the skin.
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