POLYSILICONE-18 STEARATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYSILICONE-18 STEARATE

Safety grade: A

This is a silicone-based conditioning agent created in a lab by combining silicone polymers with stearic acid (a waxy substance). It works like a lightweight protective coating that smooths and softens hair.

This ingredient conditions and smooths hair by coating the hair shaft, reducing frizz, improving shine, and making hair easier to comb.

Graded using: COSING.

Last verified: May 26, 2026

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