PEG-33 is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

PEG-33

Safety grade: A

PEG-33 is a thick, liquid polymer created through chemical synthesis that acts like a moisture magnet. It helps products stay hydrated and mixes ingredients together smoothly.

This ingredient draws moisture into the skin to keep it hydrated and helps dissolve and blend other components in cosmetic formulas for better texture and performance.

Graded using: COSING, FDA.

Last verified: May 26, 2026