TETRAPEPTIDE-31 is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TETRAPEPTIDE-31
Safety grade: A
Tetrapeptide-31 is a small chain of amino acids (the building blocks of proteins) created in a laboratory. It works to help skin feel smoother and more hydrated by supporting the skin's natural moisture barrier.
This ingredient conditions and softens the skin by improving hydration and promoting a more comfortable, supple skin texture.
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