If you have a burn blister on your finger, it is important to take proper care of it to prevent infection and promote healing. Here are some tips from reliable sources:

• Do not break the blister if it is bigger than your little fingernail. If it does break, clean it with mild soap and water, apply an antibiotic ointment, and cover the area with a bandage or gauze.
• Apply a petroleum-based ointment or aloe vera two to three times per day.
• Wrap the blister loosely with a sterile, non-stick gauze bandage and change it once a day or if it gets wet or dirty.
• Do not apply butter, toothpaste, or any food products to the burn, as these may cause an infection.
• Do not apply topical antibiotics.
• Protect the area from the sun once the burn heals.

If the burn is more severe or larger than 2 inches, seek medical care right away.