Straight hair splint can be taken on the plane. According to the relevant regulations of China's civil aviation, you can take straight hair splint when flying, because straight hair splint is not dangerous and meets the requirements. In addition, the straight hair splint on the market now has been treated with ceramic frosting, which will not conduct electricity and explode, so you can safely carry it with you. The curling iron can also be taken on the plane, because the curling iron is mostly made of ceramic-treated frosted surface, insulating shell or plastic shell, which is safe and non-conductive. In addition, curling irons are not prohibited and sharp items, nor are they among the items that the Civil Aviation Administration cannot carry. If the curling iron is rechargeable, put the wire around it and put it in the trunk. If the curling iron is battery-type, you should unplug the battery inside. In order to avoid trouble, try not to carry batteries with you. You can buy new batteries when you use them.