所有的这一切都会使得最好的防晒霜的防晒效果低于它瓶子上标的防晒系数。
All this can make even the best sunscreen less effective than the SPF number on the bottle would lead you to believe.
防晒系数为60的防晒霜可能会比防晒系数只有30的要好，但这也没有必要，而且防晒系数为60的防晒产品所达到的效果并不是防晒系数为30的两倍。
A sunscreen with an SPF of 60 might be better than one with an SPF of 30, but not necessarily - and the SPF 60 product isn't likely to be twice as effective as the SPF 30 product.
因为阳光会逐渐减弱防晒霜的效果，如果你打算在直射的阳光下多待一段时间，每一两个小时重新涂一下防晒霜。
Because sun breaks down its effectiveness over time, if you're going to be in direct sunlight for an extended period, reapply every hour or two.
这两种物质都不会穿透皮肤，基于这两种成分的防晒霜效果好，还安全。
Neither one of these seems to penetrate the skin, and sunscreens based on these ingredients appear to be safe as well as effective.
想要长时间保持的防晒效果，他建议使用Melashade，一种采用新技术的防晒霜，有效时间比其它产品要长几个小时。
For longer-lasting results, he recommends Melashade, a sunscreen using new technology that remains in force hours longer than most other products.
这个防晒霜也是乳霜状的，不过一点不觉得粘，而且保湿效果很好。
This sunscreen is creamy, but does not feel greasy at all and definitely moisturizes well.
结论：防晒霜具有完全防护紫外线效果。
Conclusion: The Sunscreen Cream has completely defense effect to ultraviolet ray.
适用情境：大多数人都会选择在夏天减肥，让身材更加苗条，不过，在阳光下大量流汗会减弱防晒霜的防晒效果。
Scenario: Many of us choose the summer to get rid of extra weight for a slimmer figure. But working up a sweat in the sun can compromise the protection offered by sunscreen.
目的：研制防晒霜乳膏，观察该乳膏对紫外线的防护效果。
Objective: To prepare and observe sunscreen effect against ultraviolet ray of the sunscreen Cream.
什么防晒霜好用05 - 27·什么防晒霜效果最好，什么颜色防晒最好，哪种。
More... what sunscreen use 05-27 what sunscreen sunscreen effect best, what color is best, which is.
防晒霜的效果已经被科学家证明了。我其他的建议没有科学根据，只是我自己的经验而已。
The long term benefits of sunscreen have been proved by scientists, whereas the rest of my advice has no basis or reliable than my own meandering experience.
其他的比如在皮肤吸收、原本肤色及药物使用方面的个体差异也会使防晒霜的使用效果发生变化。
Individual and anatomical differences in skin surface absorption, background skin colour and medication use will also vary the effectiveness of a sunscreen.
即使你没游泳，防晒霜的防晒效果也会消褪，特别是流汗的时候。而防晒衣服的防晒保护洗也洗不掉。
Sunscreen comes off, even when you're not swimming, particularly in places where you perspire. But with clothing, the protection doesn't wash off.
即使你没游泳，防晒霜的防晒效果也会消褪，特别是流汗的时候。而防晒衣服的防晒保护洗也洗不掉。
Sunscreen comes off, even when you're not swimming, particularly in places where you perspire. But with clothing, the protection doesn't wash off.
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