1、误区一：阴天和室内可以不用防晒阴天虽然见不到阳光，可是不代表没有紫外线， 90%的紫外线都能穿透云层，对肌肤造成伤害，只有昏暗而又厚重的雨云层才能阻止部分紫外线。此外，紫外线中含有 UVA会折射进室内,也会致使皮肤变黑，因此即使在室内，也要适量涂抹防晒品，但是用量可以少于室外，并且防晒系数也可以降低。误区二：防晒产品防晒系数越高越好很多人都喜欢买防晒系数高的产品，认为系数越高越好，其实不然。 UVA 是使肌肤老化变黑的首要元凶，防晒产品上只标有“SPF”的产品不能对付 UVA ，而标示“PA+”的产品才可以对付 UVA，在挑选时要留意。而且防晒系数越高的产品对肌肤的负担越大，因此不要一味选择高
2、防晒系数的产品，应该根据自己所处的环境和皮肤的特质来决定。误区三：一涂完防晒产品就出门防晒产品中的有效成分必须渗透至角质表层后，才能发挥作用，而一涂完就出门，防晒物质还没被肌肤吸收，根本没有防晒效果，这样出门晒黑是必然。正确的做法是在出门前 30分钟将防晒产品均匀地涂抹在身体暴露于阳光的部位上，临出门前再补充一次，在使用剂量上，要达到至少每平方厘米肌肤涂抹 2毫克防晒品时才有效。误区四：涂了防晒就能长久暴晒再好的防晒品也不可能防晒十几个小时，由于人体分泌的汗液和油脂的稀释，防晒效果会逐渐减弱，所以要及时洗去并补涂。补涂的频率是要看情形而定并没有绝对的数值，如果在户外活动并且流汗较多，可能不到
3、1小时就要补涂一次，但如果在没有阳光暴晒的阴凉环境中则可以 56 小时补充一次。误区五：晒黑后干脆不涂防晒皮肤晒黑后变成棕色，表明肌肤进入自我修复状态。这时候皮肤中的黑色素能吸收部分紫外线 B,起隔离作用使肌肤不受损伤，但无法吸收紫外线 A,所以肌肤还是会被越晒越黑。长久的日晒累积下来，就会造成肌肤黝黑、脸上出现斑点、皮肤失去弹性、产生皱纹、老化等现象。所以，就算是短时间被晒黑了，防晒品还是要涂的。A misunderstanding: the cloudy and indoor without sunscreenCloudy although http:/ not see the sun,
4、but does not mean no UV, 90% UV can penetrate clouds, causing damage to the skin, only the dark and heavy rain clouds to prevent ultraviolet radiation. In addition, ultraviolet containing UVA will be reflected into the room,also can cause skin darkening, so even in the interior, also want right amo
5、unt daub sunscreen, but the amount can be less thanoutdoor, and sun protection factor can also reduce.Misunderstanding two: Sunscreen SPF the betterMany people like to buy a high SPF products, that the coefficient of the higher the better, in fact. UVA is the primary cause of aging skin darkening,
6、sunscreen products only marked “SPF“ are not against UVA, and mark “PA+“ products that can deal with UVA, theselection should pay attention to. But the higher SPF products on the skin burden is high, so do not blindly choose high SPFproducts, should according to their own circumstances and skin cha
7、racteristics to decide.Misunderstanding three: a painted sunscreen products go outThe effective ingredients in sunscreens must permeate to the horny layer, can play a role, and a finish to go out, sunscreensubstance is not absorbed by the skin, no sunscreen effect, it is inevitable to go out. The c
8、orrect way is to go out in 30 minutes before the sunscreen evenly coated sun exposed parts of the body, before going out to add one, in the dose, to achieve at leastper square centimeter skin smear was 2 mg of sunscreen.Misunderstanding four: Tu sunscreen can long exposureEven the best sunscreen su
9、nscreen is impossible for more than ten hours, due to the dilution secretion of human sweat and grease, sunscreen effect will gradually weaken, so in a timely manner to wash and coating. Coating is the frequency that depends are not absolute values, if you are outdoors and sweat more, maybe less th
10、an 1 hours to fill besmear again, but if there is no sun shade environment can be 5 6 hours to add a.Misunderstanding five: Tan simply not coated sunscreenThe skin suntanned skin after Brown, show into self repair status.At this time the melanin in the skin can absorb ultraviolet Bisolation, so that the skin from damage, but can not absorbultraviolet A, so the skin will tan. Long sun accumulate, will causeskin dark, face spots, the skin loses its elasticity, wrinkles, aging phenomenon. So, even a short period of time was burnt by the sun, sunscreen or coating.
