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

POLYPROPANEDIOL-3

Safety grade: A

A lightweight humectant that draws moisture into the skin and helps keep it hydrated throughout the day. It's commonly used in serums, lotions, and other skincare products to improve texture and prevent dryness. This ingredient works well with other moisturizers to enhance their effectiveness.

Graded using: COSING.

Last verified: June 9, 2026