Yes, you can absolutely bring a curling iron in your carry-on bag in 2026. Standard corded electric curling irons have no restrictions and can even be packed in checked luggage. However, if you have a cordless curling iron, different rules apply. Cordless models powered by lithium-ion batteries must be in your carry-on because they are a fire risk in the cargo hold. If your cordless iron uses butane or gas cartridges, it is also restricted to carry-on luggage only, and it must have a secure safety cover over the heating element to prevent accidental activation. Note that you are typically not allowed to carry spare gas cartridges. In 2026, TSA and international security may ask you to remove the device from your bag for a separate X-ray screening, similar to a laptop, so keep it easily accessible.