Help meeeeee

guys i need help 😕 i’ve been to an allergist, and i’ve been to a dermatologist because EVERY TIME i take a shower i break out in hives. no matter what product i use whether it’s a prescription shampoo and body was that is supposed to be “hypoallergenic”, Aveno, soft soap or dial. Nothing helps. i’m at wits end! i’m so sick of being itchy! My next step is trying an all natural goats milk or oatmeal body wash but idk where to get them or what brands are good? does anyone have any suggestions?