What is it?
Hydroxyethyl-p-phenylenediamine sulfate is a substance used in the formulation of permanent hair dyes and colors.

How can I avoid it?
Skin contact with Hydroxyethyl-p-phenylenediamine sulfate is required for it to cause a rash. Discontinuation of exposure to products containing this substance should result in improvement and/or the resolution of your dermatitis. By law, all products made in the U.S. for topical use, have the ingredients listed on the product package or the box that contains it,
so check the labeling of your skin or hair care products for this ingredient. If there is not enough information, ask your pharmacist or contact the company directly. At work, request a Safety Data Sheet (SDS) to help identify potential sources of exposure.

  • Permanent hair dyes and colors
Other names for Hydroxyethyl-p-phenylenediamine sulfate:
  • 2-(2,5-Diaminophenyl)ethanol sulfate
  • N,N-Bis(2-hydroxyethyl)-1,4-phenylenediamine sulfate
Cross-reacting substances:
  • p-Phenylenediamine (PPD)


How safe is it?

Hang tight. We're thinking.