What Do I Do To Help My Scalp After Having My Hair Bleached?

so about a week ago i got my hair bleached light blonde. my natural color was medium brunette. the whole process took 5 hours at a salon and i ended up over paying and recieving a chemical burn. the first few days the burn didnt hurt but my scalp was covered in sores that were emitting puss and drying on my hair…a very gross feeling. well after a few days the sores went away and now i am left with an extremely dry scalp and tons on dandruff. this isnt any normal dandruff…the dead skin his pretty big and i’ve tried many home remedies but nothing works. today im going to the drug store to get some neutrogena anti dandruff stuff that dermotologists recommend…hopfully this will help. I have sent the customer relations dep. for the salon i went to a really harsh letter about what their stylist put me through. my hair looks fine but this scalp thing sucks. i ended up getting my hair dyed blond twice that day and then bleached because it kept turning orangeish. anyway if you have any suggestions about what i should do about my extreme flakes please let me know!