Hair Burned with Iron
A: The best way to handle this situation depends on how badly damaged the hair is. I would suggest that first you apply a coat of moisture-rich conditioner to the damaged hair and let it sit for at least 20 minutes then rinse it away using cool to lukewarm water.
Avoid using any heat styling on the hair or any styling products that contain alcohol as it will further dry-out the damaged hair. You will also want to examine the damaged hair closely and may need to cut away the most damaged areas.
Unless these areas are very small, or in an inconspicuous place where they can be disguised by other hair, you should consult a professional stylist to get the damaged hair trimmed away.
Unfortunately, severely damaged hair cannot be "healed". Your salon professional can often do more for you than you can do on your own, and I would highly recommend visiting a hair salon if the burned hair looks to be too badly damaged.
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See also:
Heat styling basics
Damaged hair
Will hair that got burned close to the scalp grow back?
Burning smell when using a curling iron
Burned smell when washing hair after using a flat iron