What are UVA and UVA rays?
UVA rays are the Aging rays of the sun. The intensity of these wrinkle-causing rays is the same on a cloudy cold winter morning as it is on a hot, sunny summer day. UVB rays are the burning rays which cause sunburn. The SPF (sun protection factor) number on sunscreens refers only to the UVB rays. In the US, there is scale to measure the protective factor of UVA rays. How should the sunscreen be applied for maximum benefit? One ounce of sunscreen per application is the recommended amount for the average-sized adult. This is equivalent to a shot glass-size. It should be applied to dry skin twenty minutes prior to exposure and should be reapplied after swimming or sweating. Should I use a cream, lotion or gel? There are a wide variety of products available. Facial skin deserves a high quality lotion or cream based sunscreen. Creams are best for dry skin, and lotions for normal/oily. Gels can be used on very oily skin, but because they are usually alcohol-based, they may sting upon applica
