UPGRADE MATERIAL: We use the environment-friendly high quality EVA foam hair rollers in the heatless hair curling ribbon for hair. It is not easy to deform, has no chemical smell, is softer and more flexible. Our heatless curling rod headband can be reused for a long time. HEATLESS HAIR CULRER TO SLEEP IN: Made with premium EVA material our curlers are softer and more comfortable to sleep in, achieving gorgeous, natural-looking curls WITHOUT damaging heat. With a satin finish to prevent any tangles or pulling, reducing frizziness, cares for your hair whilst styling EASY TO USE: Simply dampen your hair, place the curling ribbon on your head, wrap your hair around it then secure it with a scrunchie, Leave it 3-6 hours or overnight, youve got your curls ready to go. Spray a little styling spray for longer lasting curls. FOR ALL HAIR TYPE: Whether you have coarse or fine hair, you can get a nice, soft curl with this satin heatless curling set. No more getting up early and spending extra time getting your hair done.Now with silk heatless curlers you can wake up with gorgeous curls WARM TIPS: The Key to amazing heatless curls are 1.Be sure to slightly dampen hair for better styling 2.Spray a little styling spray for longer lasting curls after curling 3.Be sure to wrap tightly to prevent hair from slipping out of the heatless curls headband.