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

DIETHYL PHTHALATE

Diethyl Phthalate (DEP)

Safety grade: A

Diethyl phthalate is a clear, colorless liquid chemical commonly used in personal care products. It helps products maintain their texture and flexibility while keeping them from becoming brittle or cracking.

This ingredient acts as a plasticizer and solvent in cosmetics, helping to soften and condition hair, form flexible protective films on skin, mask odors, and dissolve other ingredients to create a smooth, uniform product.

Graded using: COSING, FDA.

Last verified: May 26, 2026