TRIMETHYL-1,3-PENTANEDIOL is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TRIMETHYL-1,3-PENTANEDIOL

Safety grade: A

This is a clear liquid that helps dissolve and mix other ingredients together in cosmetic products. It's a type of humectant that also helps products feel smooth and light on the skin.

It acts as a solvent to dissolve active ingredients and help them spread evenly throughout the product while also helping to keep skin hydrated.

Graded using: COSING.

Last verified: May 26, 2026