R-(SH-POLYPEPTIDE-92 OLIGOPEPTIDE-159 SH-OLIGOPEPTIDE-1) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

R-(SH-POLYPEPTIDE-92 OLIGOPEPTIDE-159 SH-OLIGOPEPTIDE-1)

Safety grade: A

This is a blend of natural protein fragments derived from yeast that work together to strengthen and protect your skin's outer layer. It helps improve skin firmness and supports the skin barrier, making it a common choice in anti-aging and moisturizing skincare products.

Graded using: COSING.

Last verified: June 9, 2026