Product Features: 1. Simple temperature control enables you use easily. 2. Dual voltage: 110V-220V, you can use the hair curling iron hair wands for some international travels. 3. Be a barber and hair artist by yourself. 4. Fast heat up fast within 60s. How to use: 1.Gently wrap the hair around barrel from the end. 2.Wrap hair from the end and roll to the middle then unroll it. Repeat for 2-3 times until the roll to the root. 3.Hold for 5-10 seconds to stylize the curls.Longer time may be needed for thicker hair. 4.Unravel the hair by twisting to create beautiful volume & loose curls. Notice: Avoid touching the skin on the neck or face. Keep away from children, do not clean with water. Keep the thermal brush closed for 10 seconds at most so that you do not damage the hair.