human
I'd like to know the difference between a tan and a burn.
assistant
A tan is when your skin has been exposed to ultraviolet radiation from the sun, which causes it to produce more melanin, the pigment that gives skin its color. This results in a brownish or bronze-colored skin. A burn is an injury to the skin caused by heat, fire, chemicals, or radiation. It usually appears as redness, swelling, pain, and blistering of the affected area.