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

POTATO SH-POLYPEPTIDE-1

Safety grade: A

Derived from potatoes, this ingredient is a natural protein that helps strengthen and condition hair and skin. It works by forming a protective layer that locks in moisture and improves texture, leaving your hair smoother and your skin feeling softer.

Graded using: COSING.

Last verified: June 9, 2026