N,N'-DIMETHYL-N-HYDROXYETHYL-3-NITRO-P-PHENYLENEDIAMINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

N,N'-DIMETHYL-N-HYDROXYETHYL-3-NITRO-P-PHENYLENEDIAMINE

Safety grade: A

This synthetic colorant is used in hair dyes and temporary color products to create lasting pigment on hair strands. It works by bonding with hair to produce vibrant, long-lasting color that gradually fades with washing.

Graded using: COSING.

Last verified: June 9, 2026