TRIPEPTIDE-21 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TRIPEPTIDE-21
Safety grade: A
Tripeptide-21 is a small protein fragment made of three amino acids linked together. It works to improve skin texture and firmness by supporting the skin's natural structure.
This ingredient conditions and improves skin by promoting firmness, elasticity, and overall skin smoothness through peptide technology.
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