I would first blot the injuries with a wet towel/napkin, and then repeat until most of the blood is gone. Then, wrap in bandages. A second degree burn is a kind of burn that affects the top layers of the skin, you can scar and get blisters, so I'd use cold water because hot water would make you blister more. DON'T USE HOT WATER ∠( ᐛ 」∠)_
