SR-(METHIONYL SH-OLIGOPEPTIDE-99) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(METHIONYL SH-OLIGOPEPTIDE-99)

Safety grade: A

This peptide is derived from amino acids and proteins, working to support your skin's natural structure and elasticity. It helps moisturize and may improve skin firmness and texture over time. It's commonly used in anti-aging and skin-conditioning products to promote a smoother, more youthful appearance.

Graded using: COSING.

Last verified: June 9, 2026