First-degree. These burns only affect the outer layer of your skin, called the epidermis. A mild sunburn’s one example. Your skin may be red and painful, but you won’t have any blisters.

Remember to take precautions. But if someone does get burned at your Independence Day event, here's what you need to know.

The appearance of a second-degree burn sets them apart from a less severe first-degree burn. You'll see skin discoloration, blisters, redness and swelling, and shiny, moist skin.

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Deep burns (second-degree over a large area, third-degree, or fourth-degree). Burns caused by chemicals or electricity. Signs of infection (increased pain, redness, swelling, or oozing).

First-degree: This kind of burn is only on the epidermis (the outer layer of skin), such as a mild sunburn. Skin is "red, painful, dry and has no blisters." ...

Third-degree burns may show up as white or blackened skin, and fourth-degree burns can burn through fat and muscle down to the bone. These may be severe thermal burns, or chemical or electrical burns.