[header] How to keep your hair straight with a perm as a black girl [title] Detangle your hair. [step] Wash it, blow it out, then straighten it a little with the blow dryer or a hot comb (not a flat iron! ). Then, trim off any split ends. 
[title] Put your hair in a bun/ponytail and leave it alone for at least 24 hours. [step] This allows the scalp to heal, as opposed to skipping straight to the perm and applying so much pressure to the hair in one day.