are hair colors cause any skin problems?

Hair colors can cause serious allergic reactions and skin problems. The directions always tell you to do a patch test for allergies (applying the product to a very small area before using it on your entire head), but I'm sure that most of us don't do this. I know that I don't, to be honest. If you are allergic to the product, you can have serious reactions including rashes and lesions on your scalp and any areas of your face that are exposed, as well as damage to the hair itself. Some rare cases of more serious reactions including trouble breathing have been reported. The literature also states that those who have had a tattoo may be more susceptible to an allergic reaction to hair dye; this is because the dye in the tattoo is similar to that used in hair color. You may not have had any reaction to the tattoo, but being re-exposed to the same dye in the form of hair color could, in rare instances, cause a serious reaction. I believe that the products are required to put this warning in the labels now.