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防晒化妆品必须有抗强烈紫外线功效,能有效地隔离致皮肤癌的波光及致皮肤变黑的波光。应选择具有抗水性强、持久性佳、滋润效果好的防晒化妆品。必须根据户外活动的时间选择合适的SPF值。所谓SPF值是防晒指数的英文缩写,是对产品时效的说明,即一次涂抹后有效的防晒作用维持时间。一般来说,SPF指数越高,防晒的时效就越长。值得一提的是;目前世界上还没有出现防晒效果能保持一天的防硒化妆品,都需要每隔3～4小时补妆一次。
Sunscreen cosmetics must have a strong UV effect, can effectively isolate the waves caused by skin cancer and skin darkening waves. Should choose to have strong water resistance, good durability, moisturizing effect of sunscreen cosmetics. The appropriate SPF value must be chosen based on the time of the outdoor activity. The so-called SPF value is the English abbreviation of SPF, is a description of the product aging, that is, once after the effective application of sunscreen to maintain time. In general, the higher the SPF index, the longer the sun protection. It is worth mentioning that; the world has not yet appeared sunscreen effect to maintain a day of anti-selenium cosmetics, you need to make up every 3 to 4 hours.