If you have a minor burn from a hot iron, you should follow these steps to treat it:

1. Remove the iron from your skin and place it in a safe location.
2. Cool the burn by immediately immersing it in cool tap water or applying cold, wet compresses for about 10 minutes or until the pain subsides.
3. Apply petroleum jelly two to three times daily. Do not apply ointments, toothpaste, or butter to the burn, as these may cause an infection.
4. Cover the burn with a nonstick, sterile bandage.
5. If blisters form, let them heal on their own while keeping the area covered. Do not pop the blisters.
6. Consider taking over-the-counter pain medication such as acetaminophen or ibuprofen to help relieve the pain and reduce inflammation.
7. Protect the area from the sun once the burn heals.

Its important to note that you should not run cold water over the burn or submerge the burned skin in a bucket of ice water, as excessively cold temperatures can further damage the burned skin. Additionally, do not touch or soak a serious burn, and cover it with something dry and get to a hospital or burn clinic.