DIPEPTIDE-21 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

DIPEPTIDE-21

Safety grade: A

Dipeptide-21 is a small protein fragment made up of two amino acids linked together. It's designed to help improve skin texture and keep skin looking smooth and healthy.

This ingredient conditions and softens the skin by helping to improve its texture, hydration, and overall appearance.

Graded using: COSING.

Last verified: May 26, 2026