PEG-400 is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

PEG-400

Polyethylene Glycol 400

Safety grade: A

PEG-400 is a clear, liquid ingredient made from petroleum that acts like a humectant and helper ingredient in cosmetics. It helps dissolve other ingredients and keeps products stable and smooth.

PEG-400 helps bind ingredients together, prevents separation in emulsions, and acts as a solvent to dissolve and mix other components while improving product texture and shelf life.

Graded using: COSING, FDA.

Last verified: May 26, 2026