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

POLYHYDROXYBUTYRATE

Safety grade: A

A biodegradable plastic-like material that comes from natural sources. It's used in skincare products as tiny particles that gently polish the skin while also helping to soften and condition it.

This ingredient gently exfoliates dead skin cells away while simultaneously moisturizing and conditioning the skin to leave it feeling smooth and soft.

Graded using: COSING.

Last verified: May 26, 2026