T.R.U.E. Test for Skin Allergies (TRUE Test)

Information about the TRUE test for allergies. Includes search function to find a testing location.


PPD Fact Sheet for Patients from T.R.U.E. Test (TRUE test ppd)

Information on PPD, including alternative names and chemicals to watch out for.


Environmental Working Group’s Skin Deep Page on PPD (EWG)

Practical information about PPD in beauty products.


FDA Online Reporting Form (FDA)

Report your PPD experience to the FDA using their online reporting form.


PPD in Hair Dye Bulletin Board (PPD in Hair Dye Bulletin Board)

Connect with others who have PPD allergy to discuss your experiences and share recommendations and warnings.


Gina Taro’s Blog (Gina’s Blog)

Excellent blog from a stylist who specializes in clients with PPD allergies.


DermNet NZ (DermNetNZ)

Comprehensive information on PPD allergy from the New Zealand Dermatological Society.