PEG-500 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PEG-500

Safety grade: A

PEG-500 is a thick, clear liquid derived from petroleum that acts like a humectant in skincare products. It helps bind ingredients together and keeps products from separating.

This ingredient holds moisture in products, prevents separation of oil and water-based components, and acts as a solvent to help dissolve and mix other ingredients smoothly.

Graded using: COSING.

Last verified: May 26, 2026