POLYETHER-1 is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

POLYETHER-1

Safety grade: A

Polyether-1 is a lightweight synthetic polymer that helps control how thick or thin a product feels. It makes cosmetic formulas easier to spread and apply smoothly on skin.

This ingredient thickens or thins cosmetic products to achieve the desired consistency, ensuring the formula applies evenly and feels comfortable on the skin.

Graded using: COSING, FDA.

Last verified: May 26, 2026