Your scalp is in an uproar- To help ease the scalp, first make sure your shampoo is sulfite/sulfate free. Water the shampoo down a little before using. (use a bottled water bottle w/ some water left in it- to gently shake w/shampoo before applying) Suds your head only once,
rinse well. If applying conditioner afterwards, apply only to the hair ends- avoid the scalp for now. Rinse well.
To temporarily return your scalp to the natural acid mantle it is, to it's proper PH, you can use a final rinse of vinegar/water. Pour it on, leave it in. Start with a weak solution, so as not to feel a burn, if scalp is very irritated.
Do not use any other leave-in hair products for now, until your scalp is back to normal.
Take your vitamins to help the body heal from within.