SH-POLYPEPTIDE-155 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

SH-POLYPEPTIDE-155

Safety grade: A

This plant-derived protein works to strengthen and condition hair by helping it retain moisture and resist damage. It forms a protective layer on hair strands, making them smoother and easier to manage while improving their overall appearance and feel.

Graded using: COSING.

Last verified: June 9, 2026