PEG-100 is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

PEG-100

Safety grade: A

PEG-100 is a synthetic liquid derived from petroleum that acts like a humectant, meaning it draws moisture from the air into your skin. It also helps dissolve and mix different ingredients together in cosmetic formulas.

PEG-100 hydrates the skin by attracting and holding water while also serving as a solvent to help blend oils and other ingredients evenly throughout a product.

Graded using: COSING, FDA.

Last verified: May 26, 2026