POLYSILICONE-9 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYSILICONE-9

Safety grade: A

This is a silicone-based polymer that acts like a flexible, invisible film on your hair. It's designed to hold hairstyles in place while keeping hair soft and manageable.

Polysilicone-9 is used in hair products to provide flexible hold and styling support while coating the hair shaft to reduce frizz and add shine.

Graded using: COSING.

Last verified: May 26, 2026