What happens when you put a ice pack on a 2nd degree burn right away?

Applying an ice pack directly to a second-degree burn is not recommended, as it can further damage the skin and underlying tissues. Instead, it's best to cool the burn with lukewarm water for about 10-20 minutes to reduce pain and swelling. Ice or very cold temperatures can constrict blood vessels, leading to complications. After cooling, cover the burn with a clean, non-adhesive bandage and seek medical attention if necessary.