SR-(OLIGOPEPTIDE-91 CLOSTRIDIUM BOTULINUM POLYPEPTIDE-1) is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SR-(OLIGOPEPTIDE-91 CLOSTRIDIUM BOTULINUM POLYPEPTIDE-1)

Safety grade: A

This ingredient is a peptide derived from botulinum bacteria that works to relax facial muscles and reduce the appearance of expression lines and wrinkles. It's used in anti-aging skincare products to help smooth the skin's surface and create a more youthful appearance over time with regular use.

Graded using: COSING.

Last verified: June 9, 2026