How long does it take for a mark to heal from being burned by a curling iron needs to be judged by the extent of the burn and cannot be generalized. If it is a mildly pigmented mark, it will generally fade away in about 3 months. If the burn is deeper or has developed exudative changes, it will take about 6-12 months to fade or even leave permanent scars. After a curling iron burn, cold compresses can be applied and medication to prevent hyperpigmentation and repair the skin can be applied under the guidance of a doctor. If a large blister appears later, it is necessary to use sterile instruments to pick and drain the blister under strict disinfection, and to cover the wound with gauze to protect it from secondary damage and pollution, which can effectively shorten the recovery time later. It is recommended to rinse the burn with cool water in a timely manner, avoid applying some toothpaste and fragrance oil privately, and go to the hospital burn department in a timely manner for symptomatic treatment under the guidance of a professional physician.