A Buff (or head wrap) is a great way to preserve your hairstyle and curl integrity while sleeping. They can range in price from $9-25 depending on the Classic Buff or various copies.
Deva curl specialist and educator, Diane Roseman Bieber adds, "[ In the morning, just ] flip upside down, shuffle the roots, and spray with a refresher if needed. You will have soft, full, beautiful curls!"
In the video below, curl stylist from Kelly Elaine Inc. in Pittsburgh, Pennsylvania, demonstrates how to put on a hair Buff.