How to tell the difference between a hair dye allergy or dermatitis?

Can be a challenge: Allergic reactions to hair dye and other hair hair chemicals (perms) can lead to skin reaction on the scalp called dermatitis. These products may also lead to skin reaction on the eyelids. Another scalp condition is seborrheic dermatitis (cradle cap in infants). A dermatologist or allergist would be a good resource to sort out the cause of the rash. Allergy patch testing may be helpful.

Dr Mumneh agreed