Unfortunately, even products with broad spectrum SPFs cannot completely block the sun. Some UV radiation reaches and penetrates the skin, generating free radicals and attacking the skin cells, collagen, and elastin. A recent university study shows, however, that the inclusion of antioxidants in SPF formulations increases protection by the action of their neutralizing activities on the free radicals generated by the rogue UV rays. With the addition of these antioxidants, the SPF properties of the sunscreens were enhanced, allowing them to provide the broad-spectrum protection. While the technology is still be developed to fully incorporate antioxidants into sunscreens, you can add a separate antioxidant, like SkinCeuticals CE Ferulic, or SkinCeuticals Phloretin, to aid in your skin’s ability to protect itself.