How do I treat a straightener burn?

Quickly. Run cool not cold water over the burn for at least 10 minutes. Do not put ice on it; actually causes further damage. Burned skin is very fragile, and you can even end up with frostbite on it. Then pat the burn dry and, if it's a minor burn, bandage it lightly with nonstick gauze and if it's very bad (large blisters, charring, covering a large area go to the E.R.