If a shampoo initially causes an allergic reaction, is there a chance that the skin could eventually adapt if you keep using it?

Shampoo Allergy. If you are allergic to shampoo you shoud see an allergist to determine what ingredient in shampoo you are allergic to and if confermed use a different shampoo which does not have same ingedient.It is not a good idea to keep using it as the allergic reaction can get worse with repeated use.