Have you ever wondered why you get freckles. Have been too sidetracked by the chaos of daily life to in fact look it up? Fear not, surfer of the Web: The folks at SciShow have got you covered.
Freckles are essentially clusters of cells consisting of melanin, a group of natural pigments found in virtually all organisms. In the skin, the production of melanin occurs when exposed to ultraviolet radiation (from the Sun. Example), which causes the skin to start to tan. Melanin is a remarkably reliable absorber of solar radiation. As a result, it's thought to safeguard skin cells from ultraviolet radiation damage.
So in such a way, freckles are tiny little lifesavers.
Take a look at the video from SciShow listed below.