-宝宝妈妈：
我用的是去年剩下的防晒霜……
去年的防晒霜用到一半，又没有过保质期，今年拿出来再用。
我们之前已经说过了，防晒指数是会被消耗的，也就是说防晒霜是会失效的。这不是变不变质的问题，一罐防晒霜被打开后，就要及时用掉，否则它一直和外界的空气、阳光接触，渐渐就会失效，而去年的防晒霜就更不用提了。
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-Alice：
一天我只在出门前涂一次防晒霜……
人人都知道在出门前要搽防晒霜，可是防晒霜要补涂，能作到的人恐怕就少之又少了吧。
市场上的防晒霜大多是化学+物理的，SPF1能持续的防晒时间大约15分钟，以此类推，如果是SPF25，那么防晒时间大约就是25×15=375分钟，大约6个小时左右，算一算吧，早上8点涂的防晒霜，大约到下午就没有用了，所以一定要注意补涂。而物理防晒，虽然是以反射紫外线的原理起到防晒作用的，不存在消耗的问题，但汗水的稀释和不断擦拭，都会带走一部分防晒霜，因此也要注意补涂。
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-小C姑娘：
除非太阳很大，否则我不防晒的……
许多人只在夏天时才注意防晒，而秋冬天、阴雨天、室内，统统不防晒。
其实，紫外线无时无刻不存在着，只是强度不同而已。冬天和阴雨天的紫外线，并不毒辣到晒黑皮肤，只是因为其中的UVB比较弱，但常常明晃晃的让人睁不开眼睛，实际上就是充满了会晒老皮肤的UVA。躲在室内也并不是好方法，紫外线一样能够透过玻璃照到你的皮肤上，同时日光灯、电脑等等，都不是省油的灯哦。
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-瓜瓜：
游泳时，身体在水下还用防晒？
游泳或去海滩玩耍时，身体泡在水里，防晒产品搽了也是白搽，再说在水下，还怕晒吗？有水挡着好凉快的。
紫外线不但能穿透水面，同时通过水的折射，还会更加强些，绝对不能忽视防晒。而防晒霜都是溶于油，而不溶于水的，所以不必担心泡泡水就会把防晒霜都“洗”掉了
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-阿萨：
防晒霜，我也用在眼部的呀！
一支防晒霜用遍全脸，好像是很对的，反正防晒霜又不会被吸收，实际上并不正确。
眼部和唇部的肌肤是最为娇嫩的，化学性的防晒霜实际上和面霜一样，是不能用于眼部的。而类似于粉底的物理型防晒霜，则是可以用于眼部的。现在越来越多的品牌，已经推出了眼部专用的防晒霜，如果没有购买到，那么扑上含有防晒指数的粉也可以，当然一副优质的防紫外线墨镜必不可少。同时，也别忘了给唇部涂上一层有防晒功能的润唇膏，避免唇色加深、唇纹增多等问题。
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-小黑皮：
已经这么黑了，防了也是白防！很可能涂了也是白涂。
本身肤色就比较黑，或者已经晒黑的皮肤，许多MM都放弃了抵抗，选择听之任之的态度。
除了一提再提的晒黑和晒老的区别之外，我们还想要强调的一点，就是为什么会变黑。皮肤变黑，实际上是紫外线促进麦拉宁色素的分泌，这种色素的分泌，实际上是为了保护皮肤，也就是皮肤开启了“自动防御机制”。
而人一生之中，这种防御系统的功效是有限的，如果你不顾肌肤的“警告”，一味滥用，那么在很年轻的时候就将“防晒资本”用尽了，就不会再返白了哦。
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大姐头：
我又不化妆，防晒霜也要卸妆？
卸妆并不单单是针对彩妆而言的，防晒霜是只溶于油的，所以即使只涂防晒霜，也要卸妆。
面霜里如果含有SPF指数，那么多半是纯化学防晒，而市面上一般专用的防晒霜，多半是物理化学混合防晒。物理防晒剂中的主要成分，就是二氧化硅和氧化锌，也就和粉底的成分一样，那么粉底要卸妆，防晒霜就不用了吗？
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