Daily use of a broad spectrum sunscreen is one of the best ways to keep your skin healthy, radiant and youthful. Obagi's Sun Shield Tint Broad Spectrum SPF 50 Sunscreen makes it easy to stay protected from harmful rays all day, every day. This tinted sun cream shields against UVA, UVB and infrared light while enhancing your natural complexion. Sun Shield is available in warm and cool tints. The warm shade is recommended for those with a darker natural undertone that is golden, yellowish or olive or tans relatively easily. Choose the cool shade if your have fair, easily burnt skin and red, pink or bluish undertones. In addition to broad spectrum UVA and UVB protection, this uniquely formulated sunscreen helps minimize the damaging effects of infrared rays, which can prematurely age skin and cause oxidative stress (the production of free radicals). To use, apply generously 15 minutes before heading into the sun and reapply at least every two hours.