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

POTASSIUM BIPHTHALATE

Safety grade: A

Potassium biphthalate is a salt compound derived from phthalic acid that helps maintain the pH balance of cosmetic products. It acts like a chemical buffer to keep products from becoming too acidic or alkaline.

This ingredient stabilizes the pH level of cosmetic formulations, ensuring the product remains at the optimal acidity or alkalinity for safe and effective use on skin.

Graded using: COSING.

Last verified: May 26, 2026