The dog days of summer are here. While soaking up the sunshine is a must, exposing our skin to ultraviolet (UV) radiation poses some serious health hazards. This is where sunscreen comes in handy to protect our skin.
隨著大熱天的來(lái)臨，曬日光浴是必不可少的環(huán)節(jié)。但我們的皮膚赤裸裸地暴露在紫外線下，很容易危害健康。想要保護(hù)我們的皮膚，防曬霜就派上了大用場(chǎng)。

However, different scenarios call for different types of sunscreen. Here, let’s take a look at the choices available to let you enjoy a vibrant and healthy summer in the sun.
不過(guò)，不同情況需要的防曬霜也各不相同。下面，就一起去看看有哪些防曬選擇，讓我們健康有活力地享受夏日陽(yáng)光！


Day of commuting and indoor fun
通勤與室內(nèi)活動(dòng)

Scenario: You’re headed to the office or school, or are engaging in indoor activities that require little time in the sun.
適用情境：去公司上班、去上學(xué)，或是參與幾乎曬不到太陽(yáng)的室內(nèi)活動(dòng)。

SPF (Sun Protection Factor) requirement: 15 or less
防曬系數(shù): ≤15

Solution: Even a two-hour shopping spree in a brightly lit indoor mall is equivalent to spending about an hour in the sun, because fluorescent light bulbs also emit UV rays.
防曬建議：在燈火通明的購(gòu)物中心里掃貨兩小時(shí)，幾乎等于在大太陽(yáng)底下曝曬一小時(shí)，因?yàn)樯虉?chǎng)里的各種熒光燈也會(huì)產(chǎn)生紫外線輻射。

A moisturizer, sunblock or foundation with an SPF is the perfect choice. Many have an SPF of no more than 15, which is usually sufficient to avoid damaging UV rays. But if you’re still worried about the protection effect, you can also double up. Use a moisturizer or a BB cream, and then top it off with an SPF 15 sunscreen.
此時(shí)，保濕霜，隔離霜，或者有防曬功能的粉底霜都是不錯(cuò)的選擇，通常，大多數(shù)此類產(chǎn)品有都防曬作用（SPF≤15），足以防護(hù)具有殺傷力的紫外線。如果你仍然不太放心，還可以強(qiáng)強(qiáng)聯(lián)合——先用保濕霜或者BB霜，然后，再涂一層防曬系數(shù)15的防曬霜。

Season for traveling and outings
外出旅游與戶外活動(dòng)

Scenario: Exploring a city on foot is the best way to absorb the local culture. But strolling around also takes time and exposes your skin to UV rays.
適用情境：想要體驗(yàn)當(dāng)?shù)匚幕�，在一個(gè)城市中徒步探索是最好的選擇，然而，到處溜達(dá)不僅占了時(shí)間，也使我們的皮膚長(zhǎng)時(shí)間暴露在陽(yáng)光下。

SPF requirement: 30 or less
防曬系數(shù): ≤30

Solution: Wearing a hat and long-sleeved clothes is sensible, but putting on a sunscreen with a broad-spectrum SPF of 30 is the ultimate protection, especially during the peak hours for sunrays between 10 am and 4 pm. However, sunscreen often degrades fast when exposed to the sun for more than an hour, so make sure you reapply it at least every 90 minutes.
防曬建議：帶帽子、穿長(zhǎng)袖都是明智選擇，然而，終極保護(hù)還是需要防曬系數(shù)30的廣譜防曬霜，特別是在日照最強(qiáng)烈的早10點(diǎn)至下午4點(diǎn)之間。需要注意的是，暴露在太陽(yáng)下一小時(shí)以后，防曬霜的保護(hù)效果會(huì)迅速下降，所以，保險(xiǎn)起見(jiàn)，建議至少每一個(gè)半小時(shí)重新涂抹一次防曬霜。

Keep fit and healthy
運(yùn)動(dòng)與健身

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.
適用情境：大多數(shù)人都會(huì)選擇在夏天減肥，讓身材更加苗條，不過(guò)，在陽(yáng)光下大量流汗會(huì)減弱防曬霜的防曬效果。

SPF requirement: 45 or more
防曬系數(shù): ≥45

Solution: Sunscreen with SPF of 45 and a water-resistant formula is strongly recommended. You can also look specifically for sunscreens made for athletes, such as a non-greasy spray that is not only convenient to carry with you, but also dries quickly so that it won’t run into your eyes. However, a water-resistant sunscreen cannot maintain its SPF very long when you are sweating, so you had better reapply it every 40 minutes.
防曬建議：這種情況下，強(qiáng)烈推薦防曬系數(shù)45并且含有防水配方的防曬霜。你可以專門關(guān)注運(yùn)動(dòng)員專用的防曬霜，例如非油性噴霧，它不僅便于攜帶而且干得很快，不會(huì)流進(jìn)眼睛。但是，當(dāng)你流汗時(shí)，防水性防曬霜的防曬時(shí)間會(huì)大打折扣，所以最好每40分鐘重涂一次。

Sunbathing on the beach
沙灘日光浴

Scenario: Sunbathing gives us a healthy tan, but overexposure to the sun’s rays can do more harm than good to our skin.
適用情境：日光浴能為我們帶來(lái)健康的小麥色肌膚，然而，過(guò)度暴曬則弊大于利。

SPF requirement: 50 or more
防曬系數(shù): ≥50

Solution: Keep in mind that you need the strongest sun protection you can get. Look for a thick sunscreen with an SPF of at least 50 that offers broad-spectrum protection. Or better still, a waterproof one that will give you longer-lasting protection. Don’t forget to reapply it every 60 minutes, or whenever you sweat or get wet.
防曬建議：這時(shí)候，你需要最強(qiáng)效的防曬保護(hù)：一層厚厚的防曬霜，其防曬指數(shù)不得低于50，并且要能抵擋所有波長(zhǎng)的紫外線。當(dāng)然，要想取得更好更持久的防護(hù)，你需要選擇具有防水功能的防曬霜。最后，別忘了每1個(gè)小時(shí)，或是每次你出了汗的時(shí)候都重涂一次防曬。