Many dermatologists and even the Skin Cancer Foundation suggest that SPF 15 provides a good basic level of coverage for everyday activities. Sunscreen often feels increasingly heavy, sticky and even greasy as the SPF level increases and because consistent daily use is the goal, SPF 15 is a comfortable level for most people. With protection from 93% of UVB rays, consumers can feel confident that they're getting a solid degree of protection.
For intense sun exposure - such as a day at the beach or for those individuals who work outdoors - there is benefit in using a sweat- and water-proof product with SPF 30, which protects from 97% of UVB rays. While you can certainly choose a high SPF product for increased protection, the minimal increase in protection often comes with a higher price. For that reason, we don't advise selecting a product with an SPF higher than 50.
In summary, our sunscreen guidance is this: Use a broad-spectrum sunscreen product with a minimum of SPF 15 every single day and ensure that you are using the proper amount. (Tip: use a daily moisturizer with added SPF like Day Moisturizer with SPF 15 to make it easier to remember your sunscreen.) Select a product that feels good on your skin so you're more likely to be consistent. While reapplying a sunscreen lotion every two hours can be difficult if you're wearing makeup, consider using a spray sunscreen that can be applied over the top. Finally, when outdoors for extended periods of time, use protective clothing like wide-brimmed hats or rashguards to protect your skin. After all, sunscreen isn't intended to be your only means of protection.