Sun spots are areas of damaged skin that occur as a result of your body's defense mechanism against the sun. When exposed to UV rays, your skin produces more pigment (melanin), making it darker. This layer of dark skin forms to protect the deeper layers from further damage. When the higher level of pigment bunches together instead of spreading out evenly, the result is freckles, splotches and spots.
Use a sunscreen and wear protective clothing to safeguard your skin from the sun's harmful rays.