Well i guess to help the prob maybe work out what is making it itch first? if its an irratation to something you could make it worse by useing something else with the same ingreedent?
also by scratching and couseing abrations in your scalp you may irratate it more ,
i am illergict to hair dies , started with alittle itching , next time i did it was more itching then few mounths later did it agen and swolloen! open wounds ect on scalp, face and neck ! why cos i didnt listen to my body lol i am fine now i dont die my hair any more but it opened me up to other allergys! like alot of hair products ect....
anyways , try to find the cause to find the cure hun ,
but for me head and sholders soothed it (i guess because it exfoliates or peels or something lol ) baby shampoo also helped
aquris cream can be used to wash your hair if it is reallly bad but maybe also leaveing it alone for a cople of days letting its natral oills and P.H ect retearn to normal.