I have a client in on my day of working in the college salon, i washed her hair the week she changed her meds. (She gets her hair washed once a week as she cannot wash it herself it home.) The week after one of my friends did it instead and she had told her that she had had a reaction she thought it was because i didnt wash the conditioner out properly (which i did i always doube check). So the following week she comes in again and ive got her. She explains the symtoms to me and i have a look and its got flaky bits in it around the root and scalp area. and her scalp is red raw, (if i hadnt washed the conditioner out two weeks prior too it, it would have been washed out on her next visit with the other girl) Does it sound like and allergic reaction to you? Or do you think it has got something to do with her meds, so if this is confusiing, i will clarify anything thats confused you xx