GLYCYL SH-OLIGOPEPTIDE-4 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

GLYCYL SH-OLIGOPEPTIDE-4

Safety grade: A

This is a skin-conditioning ingredient made from amino acids that helps improve skin texture and firmness. It works by supporting your skin's natural structure and elasticity, making products feel smoother and more nourishing when applied.

Graded using: COSING.

Last verified: June 9, 2026