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防晒化妆品被广泛使用的今天,消费者在选购防晒化妆品时,首先考虑的是产品防晒效果(即SPF值),第二是品牌。多数化妆品生产企业在开发生产防晒化妆品时,出于宣传自己产品的需要,在产品包装上注上SPF值,但标注的这些SPF值究竟对消费者在选购化妆品时有多少指导意义和实际价值呢?可能无人知晓。防晒化妆品在本世纪30年代被开发以来,防晒产品的使用效果评价亦随之展开,1978年美国的食品及药品管理局(FDA)确立以白种人为实验对象评价防晒化妆品的方法,将其测试结果用SPF值表示。其含义是在同等强度的紫外线照射下,使用和不使用防晒化妆品皮肤出现最小红斑时所需照射能量的比值。SPF值越大,说明产品的防晒效果越好。
Sun protection cosmetics are widely used Today, consumers buy sunscreen cosmetics, the first consideration is the product sunscreen effect (ie SPF value), the second is the brand. Most cosmetics manufacturers in the development and production of sunscreen cosmetics, out of their own products to promote the needs of products in the packaging on the note of the SPF value, but the label of these SPF value of consumers in the purchase of cosmetics how much guiding significance and practical value It may be unknown. Since the sunscreen cosmetics were developed in the 30s of this century, the evaluation of the effect of sunscreen products has also started. In 1978, the U.S. Food and Drug Administration (FDA) established a method of evaluating sunscreen cosmetics for white people. The test The results are expressed as SPF values. Its meaning is the same intensity of ultraviolet radiation, with and without the use of sunscreen cosmetic skin erythema minimum required irradiation energy ratio. The larger the SPF value, the better the sun protection effect of the product.