Computer, smartphone and tablet screens can all have negative effects on the skin, causing oxidative stress within cells and accelerating the skin's natural aging process. This protective barrier has an ultra-lightweight texture, and helps protect cells from blue light and UV rays for stronger skin that is better protected against photo-aging. Its formula blends a plant-based blue light protector, cranberry extract's well known for anti-free radical properties, UVA/UVB filters and SPF 50. Dermatologically tested.