There are many misconceptions with sunscreen.You have those people who think that getting the highest SPF will protect them better than a lower SPF.

对于防晒，有不少误区。很多人认为高SPF比低SPF防晒的效果更好。还有一些人认为自己不会晒黑，所以根本不需要高防晒指数的防晒霜。

Then, there are those who won’t use sunscreen with a high SPF because they think they won’t get a tan.Here are the facts.Higher SPF’s aren’t always necessary.

然而事实并非如此。高的防晒指数并非总是必需的。

You need to look at a couple of things when you are shopping for sunscreen.

当你购买防晒霜时，你需要考虑以下几点。

First, how light is your skin tone¹?

首先，你的肤色如何?

Those with lighter² skin will usually burn faster than those with darker or olive³ skin.If your skin starts to turn red fast, you’ll want a higher SPF.

亮色皮肤的人较暗色或橄榄色肌肤的人更容易晒伤。如果你的肌肤很容易变红，那你就需要高防晒指数的防晒霜。

But what does the SPF rating⁴ really mean?SPF stands for Sun Protection Factor.

但是防晒指数等级到底指的是什么呢?SPF是防晒系数的意思。

To figure out how long you are safe from the sun (at least the UVB rays) you need to do a little math.Take the number of SPF and multiply it by 10.

需要计算一下才能知道你在太阳下可以待多久而不会被晒伤(至少不被UVB射线晒伤)。将SPF系数乘以10得出来的时间就是防晒产品的保护时间。

That is the time that if you were under perfect conditions, you’d be safe from the sun’s rays.For example: SPF 20 x 10 = 200 minutes of sun protection.

例如：SPF20的防晒产品可以保护200分钟之久。理想的条件意味着你不是在水里或是在出汗。

Perfect conditions mean that you aren’t in water or sweating.Because you want to be safe from the sun, I’d recommend applying every 1-2 hours, no matter the SPF.

要做到防晒，我的建议是，不管防晒系数是多少，每隔一两个小时涂一次防晒霜