C11-15 ALKETH-40 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

C11-15 ALKETH-40

Safety grade: A

This ingredient is a gentle cleanser and thickener derived from natural plant oils. It helps cosmetic products mix water and oil together smoothly, while also creating a pleasant texture. You'll find it in lotions, shampoos, and body washes where it makes products easier to spread and use.

Graded using: COSING.

Last verified: June 9, 2026