The MINISO hair rollers give your hair a charming volume with curls or bounce. Convenient design and easy to use. Curly hair wave small or bigger. DIY you hair at home without injure your hair. Perfect Arc in the core and shell of the hair roller. How to use: 1. First, use it when the hair is almost dry, or spray some water on the hair before you use it 2. Then roll a certain amount of the hair with one hand fixing the roller, and the other hand rolling the hair inward or outward 3. It will take about 12-15 m Storage: Keep it dry in the shade, and avoid sunshine or high temperature.