I washed my hair yesterday and applied some sulphur 8 to my scalp. I need a relaxer and would love to go get my hair done, since my boss will be out. Would the fact that I washed yesterday and applied sulphur 8 be harmful to my scalp. I didn't know he was playing hooky today. I washed it to stretch it until I could in the shop. I know I won't have a problem this afternoon but I'm afraid to relax it.