YOUBELLA Cordless Hair Curling Brush This rechargeable cordless hair curler offers versatile styling with curling, straightening and caring for negative ions. The cordless hair straightener brush is compact, travel-friendly, and provides 45+ minutes of use for perfect on-the-go styles. 【FAQ】 Q: Can this product be carried on an airplane? A: Yes, the product can be carried in your hand luggage. Q: Why the product does not heat up? A: Make sure the product is fully charged. Wait until the turn signal becomes fixed before use. Q: Why the product doesn't work? A: Make sure it is fully charged and wait for the turn signal light to become fixed before use. For longer, thicker, or rougher hair, it will take longer to comb it, requiring a longer run time.