Description: Hair care hat:Hot and cold dual use,this heating steaming hat effectively retain heat after heating. The holding time is about 30 minutes, gently warms your head and scalp, effectively nourishes and conditions your hair, leaving your hair smoother and lustrous.Elastic:it is lightweight, durable, comfortable to wear and compatible with most head circumferences.Convenient :Lightweight and portable, cordless,convenient to use in your daily work or leisure time without affecting your movements.cold: 1.Put the product in the freezer for 1-2 hours in advance; 2.Rinse the hair without leaving residue on the hair; 3.Apply the hair product evenly on the hair; 4.Take out the hair hat from the frige and put it on 10 to20 minutes; 4. Then wash your head with warm water. (The water temperature should not be overheated)Hot Use: 1. Rinse the hair before using the hair mask conditioner, and apply it evenly on the hair; 2. Put the product in the microwave oven and heat it for 1-2 minutes on medium and low heat (due to the different power of the microwave oven, it is recommended to heat it for 30 seconds to test the temperature and choose suitable temperature); 3. Put on the hair hat 10 to20 minutes; 4. Then wash with warm water. Specification: Material: cloth, cotton outer layerSize: 21cmx17cmx7.5cm/8.27inchx6.69inchx2.95inch Package Includes: 1 Hair Steamer Heating Caps1 Shower Caps1 Packing Bag Note: Please allow slightly errors due to manual measurement and different monitors.