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

POLYPROPANEDIOL

Safety grade: A

Polypropanediol is a clear liquid ingredient that acts like a helper in cosmetic formulations. It keeps product ingredients mixed together smoothly and prevents separation while also making products feel pleasant on the skin.

This ingredient helps blend oil and water-based components in cosmetics, stabilizes formulations to prevent them from separating, and adjusts product thickness to achieve the desired texture.

Graded using: COSING.

Last verified: May 26, 2026