POLYQUATERNIUM-115 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYQUATERNIUM-115

Safety grade: A

A synthetic conditioning agent used in hair and skincare products to help smooth the hair surface, reduce frizz, and improve softness and shine. It works by coating strands and helping products spread evenly across skin and hair. It's commonly found in shampoos, conditioners, and styling products.

Graded using: COSING.

Last verified: June 9, 2026