TOLUENE-3,4-DIAMINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TOLUENE-3,4-DIAMINE

Safety grade: A

This chemical compound is commonly used in hair dyes and colorants to create lasting color. It works by binding with hair to produce vibrant, fade-resistant shades. You'll find it in many permanent and semi-permanent hair coloring products available at beauty retailers.

Graded using: COSING.

Last verified: June 9, 2026