REALITY: Unless you are slathering yourself in foundation, your coverage is inadequate. Dr. Brandt recommends wearing at least a teaspoonful of sunscreen on your face every day. "Protecting your skin from the sun lets the repair enzymes shift from defending skin to healing it." He recommends Neutrogena's Ultra Sheer Sunblock SPF 100 ($12; neutrogena.com). "It provides complete coverage without looking chalky, and has a light texture," Brandt adds.