1、The outer layer is made of silicone material, four-row cable design, and intelligent temperature control. 2、Three-level temperature control technology, more temperature options, the thermostat automatically cuts off the power supply for safe use. 3、The thickened waterproof thermal insulation liner is detachable and washable, safe and convenient. 4、Heating cap outer layer is made of PU fabric, which is thick and durable and easy to clean. 5、The elastic cord can adjust the size of the hair heating cap at will to suit the comfort you want. 1 x Hair Heating Cap Condition: 100% Brand NewItem Type: Hair Heating CapMaterial: PU+PVC linerSize: Approx. 23 x 17cm / 9.1 x 6.7inVoltage: CN plug 220VGear Adjustment: Three gearsFeature: Hair care at room temperature, most of the nutrients are lost, and it is not easily absorbed by the hair. Using a heating cap can more effectively absorb nutrients, shorten the dyeing time, color firm and evenly, improve the quality of dyeing, and maintain the damage after perm Hair quality, fast heating, intelligent temperature control, waterproof inner liner, bright color.Instruction: 1. Wash your hair clean with shampoo, don't use conditioner, otherwise the hair scales will be closed; 2. After shampooing, wipe the hair half dry and apply the hair mask on the hair; 3. After gently massaging the hair for a while, wrap the hair with plastic wrap or shower cap or thin towel; 4. The 3rd gear heating cap can be borrowed for 5 minutes after resisting it for 5 minutes. It can be used after preheating for a few minutes in winter; 5. After finishing the treatment, wait for the hair to cool completely, wash the hair with warm water and heat the inner pot of the cap; 6. If you feel that your hair is not smooth enough, you can use the conditioner again.