METHIONYL SH-POLYPEPTIDE-93 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

METHIONYL SH-POLYPEPTIDE-93

Safety grade: A

This protein-based ingredient is derived from natural sources and works to strengthen and protect your skin's outer layer. It helps improve skin firmness and elasticity while supporting the skin's natural barrier function, making it a common addition to anti-aging and moisturizing products.

Graded using: COSING.

Last verified: June 9, 2026