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

DIETHYLPYRAZOLIDINEDIONE

Safety grade: A

This synthetic ingredient works as a preservative booster and stabilizer in skincare and cosmetic products, helping extend shelf life and maintain product consistency. It's commonly used alongside other preservatives to keep formulas fresh and prevent unwanted changes over time.

Graded using: COSING.

Last verified: June 9, 2026