If a person develops dermatitis, they may be prone to having post-inflammatory hyperpigmentation, scarring, or hypopigmentation. Moreover, people must take note that even though their symptoms have already disappeared, it is most likely that they will be sensitive to PPD for the remainder of their lives.
Diagnosis of Allergic Reaction to Hair Dye
Allergists or dermatologists commonly use a patch test to see if there is a skin allergic reaction to PPD or other ingredients that are present in hair dye. There are two methods classified under patch testing, namely uncovered patch tests and covered patch tests.
Uncovered patch tests are usually for people who have not used hair dye yet. For this type of patch test, there is a possibility that people would get a primary allergic reaction to the hair dye used for patch testing. On the other hand, a covered patch test is used for determining the sensitivity of a person to PPD.
If the results for both patch methods are positive then that would mean you are allergic to PPD and should avoid it. Other than PPD, there are also other ingredients that may cause skin allergic reactions, namely fragrances, preservatives, and other types of hair dyes.
Treatment for Allergic Reaction to PPD
Luckily, there are treatments for those with dermatitis from PPD.
- When washing your hair, make use of a mild soap or a soapless shampoo to remove the dye. By using mild products, you are not risking your already sensitive skin to other possibly harmful ingredients present in shampoo or soap.
- Use a cold mixture of lime and olive oil to soothe a crusty scalp. This mixture also helps the scalp to loosen up as well.
- Make use of 2% hydrogen peroxide or potassium permanganate (1:5000 dilution) to oxidize the PPD on your scalp.
Other treatments include topical ones such as emulsion of water, corticosteroid cream, or oral corticosteroids. If other parts of your body came in contact with PPD and started to form dermatitis, the treatments for those would be emollients and topical corticosteroids.