PEG-90 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PEG-90

Safety grade: A

PEG-90 is a thick, oily liquid made from petroleum that acts like a humidifier for your skin. It helps products mix together and keeps moisture locked in.

This ingredient draws moisture into the skin to keep it hydrated and helps dissolve other ingredients so they mix smoothly throughout the product.

Graded using: COSING.

Last verified: May 26, 2026