Avoidance: Para-phenylenediamine (PPD), perhaps, is the more common agent in dyes that causes contact allergies. Untreated, the reaction persists for weeks and even months if the dye is not removed. Other products like shampoos can also be sensitizing due to fragrances, plant extracts or excipients added. PPD is also in photocopy materials, some oils/greases, rubbers, plastics. Patch tests can confirm.
Answered 7/23/2020
696 views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question