Here are some tips to help you keep your temperatures manageable. 1  Do not let your grow room exceed 86Â° F. Keep it between 70Â°-86Â° (21Â°-30Â° C) 2  Heat rises. So place air intake vents as low as possible in the room and exhaust vents as high as possible. 3  Circulate the air in your grow room to keep temperatures even.
Quick Answer. Perms can take between 1 and 2 hours, depending on how long the hair being permed is and what perming technique is implemented by the stylist. Once complete, a perm is not completely settled until about 28 hours have passed. Keep Learning.
Report Abuse. However long it takes for your hair to grow out is how long it will take for the perm to wear off. You could always blow dry it straight every day, which is not something I recommend due to the frizz factor, but the perm will wear off.bee Â· 9 years ago.Thumbs up.0.owever long it takes for your hair to grow out is how long it will take for the perm to wear off. You could always blow dry it straight every day, which is not something I recommend due to the frizz factor, but the perm will wear off. bee Â· 9 years ago. Thumbs up. 0.