Function: 1. Three speed temperature control technology, the thermostat automatically cuts off the power to ensure safe use. 2. Intelligent temperature control, 4-row cable design, outer layer of silicone material. 3. The outer layer of the heating cap is made of PU fabric, which is thick, durable and easy to clean. 4. The inner tank is thickened, waterproof and insulated, removable and washable, safe, convenient and practical. 5. The elastic rope can adjust the size of the cap at will and can be adjusted to the desired level of comfort. Specification: Item Type: Electric Heating Cap Material: PU PVC liner Size: Approx. 23 x 17 cm / 9.1 x 6.7 inch Gear adjustment: three gears Feature: Hair care at room temperature, most of the nutrients are lost and not easily absorbed by the hair. Using the heating cap can absorb nutrients more efficiently, shorten the dyeing time, color strong and even, improve the dyeing quality and keep damage after permanent hair quality, fast heating, intelligent temperature control, waterproof inner lining, bright color. Instruction: 1. Wash your hair with shampoo, do not use conditioner, otherwise the hair cuticles will be closed; 2. After shampooing, wipe your hair half-dry and apply a hair mask to your hair; 3. After gently massaging your hair, wrap your hair with foil or a shower cap or a thin towel for a while; 4. The 3 speed heating cap can be used for 5 minutes at low level, then approx. 5 minutes at high level. In winter, it can be heated for a few minutes before use; 5. After finishing the treatment, wait for the hair to cool down completely, wash your hair with warm water and heat the inner container of the attachment; 6. If you feel that your hair is not smooth enough, you can use the conditioner again. Package List: 1 x electric heating cap