SH-POLYPEPTIDE-90 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SH-POLYPEPTIDE-90

Safety grade: A

This is a protein-derived ingredient made from amino acids that helps strengthen and condition hair and skin. It works by forming a protective layer on the surface, helping to improve texture and reduce frizz while adding shine and smoothness to your hair or skin care routine.

Graded using: COSING.

Last verified: June 9, 2026