My 19 year old DD has sensitive skin and MS. In the last year she has complained that when she washes her hair she gets little red bumps on her hands where the hair follicles are, and presumably this happens to her scalp. It only lasts for a few hours and is a little itchy. She is now using non allergenic baby shampoo but it still happens. I’ve told her to go to a pharmacist and ask for recommendations, but anyone here have advice? She’s very fair with auburn hair, but can tolerate make up and has no known allergies (she can’t see any commonality in her shampoo other than the usual ingredients).