how long does it take for a perm to grow out of black hair
Â· just now. Report Abuse. You will either have to cut all the perm out, or let it grow out. You said your African American so you relaxed your hair straight and it take 6 months to a year for the perm to grow off your hair unless you cut it all off.Sorry! Reece_Cabrera Â· 7 years ago. Thumbs up.irst you could grow your hair out to a desired length and then cut the relaxed hair off or you could just cut your hair where it is now and let it grow back naturally. Either way you have to wait. Source(s): StarBlings Â· 7 years ago.