PEG-12 ISOSTEARATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PEG-12 ISOSTEARATE

Safety grade: A

This is a synthetic ingredient made by combining polyethylene glycol (a widely used cosmetic ingredient) with isostearic acid (a branched fatty acid). It helps blend oil and water together in cosmetic formulas.

This ingredient acts as an emulsifier to mix oil and water-based ingredients together, creating a smooth, stable product texture that won't separate over time.

Graded using: COSING.

Last verified: May 26, 2026