First, wash your hair and dab your hair with a towel or white tee shirt. Damp hair is better to work with, creates faster results, and better results. Then, separate a 1-1 1/2 inch part of hair and make several large or small cornrows (depending on how tight the curls you want) around your head.Your hair should begin to curl over night and create big, beautiful, voluminous curls.ou can do this on natural hair, and relaxed hair.In the morning, un-braid your hair and use a curl definer on your hair to maintain volume and create shine and more defined curls. Enjoy you're new, heat-less curls!