Spiral curlers set: you will receive 12 pieces of spiral curlers in 4 colors, respectively are green, blue, yellow and pink, together with 2 pieces of blue styling hooks The size of the spiral curler is approx. 55 cm .No heat damage: the hair curler is an alternative to heated styling irons, which can create safe and beautiful curls and waves without damaging the hair, you can also DIY your favorite wavy hair style with it .How to use: when the hair is wet, take out the hair about 1 inch wide, slide the curler onto the hook through the gap, then pull the hair into the curler with the hook, keep the curler on the hair for about 15 to 20 minutes until it is completely dry (air dry or use a hair dryer), and then gently pull the curler to slide it down out of the hair .Wide application: the spiral hair rollers are suitable for people to DIY their favorite wavy hair style, and also suitable for different types of hair, such as curly, natural curl, straight hair, long hair, short hair, sparse hair, thick hair, etc. .Features: these no heat hair curlers can be applied repeatedly, the curling effect depends on the curling time, quantity and quality of hair, the less hair you roll at a time, the better the effect .