Anyone who's had a sunburn knows how the sun can wreck havoc on your skin, but are you aware that sunlight may also be slowly drying out your epidermis? Exposure to the sun's rays may cause your skin to lose its moisture and natural lubricating oils, which, in turn, can lead to xerosis and premature wrinkles, even in young adults [source: Harvard Medical School].
There's an easy way to counteract those pesky ultraviolet (UV) rays, even for the most ardent sun worshippers. All you need to do is use a skin moisturizing product with sunblock in it -- something as low as SPF 15 should do the trick for most people, unless you plan to be in the sun for an extended period of time [source: Leffell].
Even when sunlight is dim or obscured, it can damage the skin, so adding a light sunscreen to your daily moisturizer can have huge long-term benefits for the health and appearance of your epidermis. Plus, if you already use a daily moisturizer but xerosis is still a frequent problem for you, adding a sunblock into the mix might help you permanently smooth out your dry skin.