POLY(TRIPEPTIDE-6) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLY(TRIPEPTIDE-6)

Safety grade: A

This is a small protein fragment made up of three amino acids linked together and repeated multiple times. It's designed to help skin retain moisture and stay hydrated.

This humectant ingredient draws water into the skin and helps lock in moisture, keeping skin soft, supple, and well-hydrated.

Graded using: COSING.

Last verified: May 26, 2026