The Skin Cancer Foundation recently released guidelines and tips on how to use sunscreeen safely and effectively, as the summer season intensifies and more people spend significant time outdoors.
Research has shown that daily sunscreen use not only reduces skin cancer risk but also helps prevent premature skin aging caused by ultraviolet (UV) rays from the sun.
“My patients often ask, ‘What is the best sunscreen for me?,’” says Deborah Sarnoff, MD, president of the Skin Cancer Foundation. “I say the best sunscreen is the one you’ll actually use. Finding a product that works with your skin and lifestyle makes it easier to incorporate it into your daily routine. Using sunscreen every morning should be as second nature as brushing your teeth.”
When purchasing sunscreen, deciphering the language on the label is the key to ensuring that your chosen product protects you.
A sunscreen’s SPF (sun protection factor) determines how effectively the product filters out UV rays. SPF 15 filters out approximately 93 percent, while SPF 30 keeps out 97 percent. A sunscreen with a minimum of SPF 15 will suffice for days where you are mostly inside, but if you’re spending extended periods of time outdoors, a water-resistant formula with an SPF of at least 30 would be necessary.
Outside of the basics, physical filters like zinc oxide or titanium dioxide might be better if you have sensitive skin, since they are less likely to cause skin reactions as opposed to chemical ingredients. There are also sunscreens that offer tinting, antiaging ingredients, dry spray or acne-fighting ingredients.
However, regardless of the qualities of the sunscreen, the most important part of protecting your skin is applying it properly and consistently.
One ounce of sunscreen, or about the amount that would fill a shotglass, can cover the entire body. For use on only the face, a nickel-sized dollop works. Applying in a timely manner is also crucial for consistent protection. The Skin Cancer Foundation recommends applying sunscreen 30 minutes before going outside, then reapplying every two hours and immediately after swimming or heavily sweating.
Water-resistant sunscreens typically offer 40 or 80 minutes of protection, and no sunscreen is truly waterproof. With proper reapplication, a person should use up one four-ounce bottle of sunscreen during a full day outdoors.
While sunscreen is important, a multi-pronged approach to sun safety can protect your skin much more effectively.
Wearing a wide-brimmed hat, staying in shaded areas and wearing UV-blocking sunglasses can all assist in keeping your skin safe from UV rays.
The Skin Cancer Foundation has a Seal of Recommendation that they award to products that demonstrate safe and effective sun protection.
A list of these products can be found at SkinCancer info.org.
