Sunscreen should be applied 365 days a year, rain or shine and whether you are indoors or out.  Many people feel they only need to protect themselves on sunny days or when involved with outdoor activities.  The fact is that we need to protect our skin even when we’re driving a car, flying in an airplane, or running errands. It’s the daily UV exposure that contributes to the physical signs of aging.  Choose a broad-spectrum clear mineral sunscreen with an SPF of 30 or greater and remember that it needs to be reapplied every 2 hours.