Description: Suitable for damaged, curly, frizzy, long, natural, or ethnic hair types to help improve strength, volume, and manageability. Great for relaxing hair follicles and spreading the nutrition. Boosting and deep conditioning to get a smooth healthy glossy hairs. with an elastic rim with no need for electrical outlets or batteries, it warms up by simply placing it into the microwave, and heating it up to the desired temperature. (Always warm not hot). Made of soft synthetic fiber with an elastic band, comfortable to wear and stretchy to fit most head sizes, hair volumes and lengths. Unique design with linseed(flax-seed) inside the bonnet that ensures heat radiating through the entire evenly and gently. Linseed is good for retaining moisture and can be re-warmed repeatedly. Cordless, lightweight and portable, eco friendly and reusable. Great for home, bathroom and traveling. Specification: Material: Synthetic Fiber Size: Approx. Inner Diameter: 12cm/4.72inch External Diameter: 25cm/9.84inch Package Includes: 1 Piece Thermal Hair Note: How To Use: 1. Rinse your hair completely until there are no residues and then apply the hair care products. 2. Heating the by microwave(medium fire) according to the power of the microwave oven, it is recommended to heat for 30 seconds the first time, take out, test the temperature. You can then heat it again within 30 seconds, the maximum time for total heating should not exceed 2 minutes to avoid rupturing and damaging the hair . 3. You need to use a shower to wrap your hair under this thermal steamer . 4. The conditioning time is usually about 10-20 minutes and take off and wash the hair with warm water. 5. Wash the thermal hair with warm water or neutral soap instead of soak it in water directly.