See The 10 Best Sunscreens on Ezvid Wiki ►►
Fact #1. Sunscreen protects your skin from the damage that over-exposure to sunlight can cause. It does this by both reflecting and absorbing the sun's rays. Various inorganic compounds such as zinc oxide reject ultraviolet light, sending it back away from treated skin. Other ingredients absorb and dissipate the heat of solar rays in the visible or infrared spectrum.
Fact #2. For everyday use when you won't spend protracted amounts of time in direct sun, the general rule of thumb is that a rating between 15 and 20 SPF is sufficient to offer protection. For daily use with limited sun exposure, it's acceptable to choose a product with this coverage level based on other attributes you like, such as a certain moisturizer profile or ingredients like Vitamin E or aloe vera.
Fact #3. If you'll be in the sun for a long amount of time, or live in an area with hours of direct daily sunshine, then you need to select a good, powerful option first, and consider its secondary properties later. One with an SPF rating of 50 or higher is a wise choice for ensuring your skin stays healthy in the long term. If you don't like the process of rubbing lotions into your skin, consider spray-on options. These formulas rarely offer much in the way of moisturizing, but they offer great sun protection and are easy to reapply. This makes them perfect for days at the beach.
Fact #4. A lifetime of unprotected exposure to the sun dramatically increases your chances of developing life-threatening skin cancer. Getting too much sun will also increase the pace at which wrinkles develop and will make them more pronounced. These are long term and potentially serious issues, and mitigating them takes a lifelong commitment to vigilant sun caution.
Fact #5. When the sun's UV-B rays hit your skin, they facilitate a reaction that synthesizes Vitamin D. Your body needs this for proper absorption of nutrients and minerals like calcium and iron. About 10 to 15 minutes of direct sun exposure a day is sufficient for producing Vitamin D, though, and supplements can always augment your body's supply of it.