Note: If you have short curly hair you may want to do two pineapple pigtails instead of one. Otherwise, most of your curls won’t make it into the pineapple!
Clip it: If your hair is very long, it is probably flopping around in your face by this point. Take some medium sized claw clips and clip the pony to the top of your head. This will keep the hair from flopping around while you sleep. Wear a sleeping cap: Another option is to just pull a satin sleep cap over your pineapple. This will keep the curls in place and protect your hair from frizz while sleeping. Always wear a satin- or silk-lined bonnet—stay away from cotton and other drying fabrics that absorb moisture because dry, dehydrated hair is prone to frizz.
On tighter, type 3 and 4 curls, a light oil can be the best way to refresh your hair. This is also known as a dry refresher.