FYI: Why Do You Lose Your Tan In The Winter?

Tuesday, June 4, 2013 - 10:00 in Biology & Nature

Such a glorious tan! Popular Science Whenever you decide to clean your house, you could be slowly but surely sweeping your tan right out the door. Walk along a California beach on a warm summer day, and there are sure to be dozens of men and women, spread out on their towels, soaking in as much sun as they can. Sure enough, about six months later, in the cool months of January, February, and March, that same tan they worked so hard to obtain is... gone. What happened? The short answer: it fell off. The long answer? Let's start with how we tan. Put simply, a tan is a protective mechanism for the skin according to Dr. Ali Hendi, a skin cancer specialist from Georgetown University. There are a few cells in the basal (bottom) layer of the epidermis (or outer layer of skin) called melanocytes which produce a pigment called...

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