Sun let your young age of 13

Europe and the United States had a survey data show that wiping sunscreen every day women 50 years of age, will they look 13 years younger, that is, looking only 37 years old.
Need sun protection all year round
UV radiation is not strong when the summer sun should be thought of. Because UV is not only in sunshine, even in the mist, cloudy weather and clouds, also exist. And daily life fluorescent lamps, halogen lamps, computer screens and other light and dark skin contain UV. Even at home, ultraviolet can be reflected through the walls and glass, so I do not need to go out like the sun. Especially in the ultraviolet UV (320nm ~ 400nm UVA) in the sun about 10% to 20%, which is that the main reason for premature aging of skin. Its penetration, penetrate the dermis layer, skin tanning, and lead to impaired lipid and collagen, causing skin photoaging and even skin cancer, the role of slow and persistent, cumulative, it is also known as "Age Ultraviolet", without windows, umbrellas, etc. block. Even rainy days as well.
SPF: index too bad perspiration
Office workers to work only in the way exposure to the sun, in order to make the skin comfortable, breathable, SPF SPF 15 the following can be. Play in the field, swimming beach, fully exposed human skin in the sun, you need to use SPF values above 30 sunscreen.
Sunscreen usage: per square centimeter "1 dollar"
To achieve the effect of sunscreen per square centimeter of skin need to apply 2 mg of sunscreen, sunscreen use is the amount of each is about the size of a 1 dollar coin. If too little sun protection painted backward.
Sunscreen coating thick enough, even enough to get the best protection is a key step. Best sunscreen is updated annually, and pay attention to store in a cool place.
Sunscreen products, we can not ignore the neck, jaw, ears, etc., be careful cause uneven skin tone, the formation of large painted face. Lips also need attentive care, the high temperature during the day so the water evaporates quickly lips, are more vulnerable to sun damage, sunscreen and moisturizer should be painted with the dual effect of lip balm.
Generally best to apply sunscreen 30 minutes later to go out in the summer sweat easily, should be applied once every two hours