TRIPEPTIDE-9 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TRIPEPTIDE-9

Safety grade: A

Tripeptide-9 is a very small protein fragment made up of just three amino acids linked together. It's designed to help improve skin texture and keep the skin feeling soft and smooth.

This ingredient is used in cosmetics to condition and improve the overall feel and appearance of skin by enhancing its moisture retention and promoting a more supple complexion.

Graded using: COSING.

Last verified: May 26, 2026

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