0 comments / Jun 06, 2016,author:Qianhui Guo" > Posted on by Qianhui Guo

Believe it or not, summer is coming soon. The most important thing for many people is sun block when travelling. But do you know how to choose sunscreen? What it means of SPF50 and PA+++? How much you need to apply when you are travelling? According to a research in JAMA Dermatology, only 43% people know the definition of SPF. And 93% people in this survey had purchased sunscreen. So today let’s get to know something about sunscreen.
SPF and PA are two important factors we need to concern about when we are going to buy sunscreen. So what do they mean? SPF is stand for SUN PROTECTOR FACTOR, a measure of how well a sunscreen will protect skin from UVB rays. For example, if you will get sunburn in 10 minutes without applying any sunblock things, then you will get sunburn in 10 * 15 = 150 minutes after applying SPF15 sunscreen technically. Therefore, the larger SPF number is, the longer time you will get protected. In JCK TREND, most sunscreens’ SPF are 50.

PA is stand for PROTECTION UVA. Although UVA will not cause sunburn as UVB, it really leads to darkening and aging of your skin. So PA means a measure of how well a sunscreen will protect skin from UVA rays.

  • PA+ about 4 hours, average effective. 
  • PA++ about 8 hours, very effective
  • PA+++ over 10 hours, super effective 

Generally, SPF corresponds to UVB rays, and PA corresponds to UVA rays.
However, apart from choosing right sunscreen, applying correctly is also very important. Generally, apply sunscreen 15 to 30 minutes before you go outside. For lotions, a good rule of thumb is a teaspoon per body part or area (1 teaspoon for your face and neck; 1 for each arm; 1 for each leg; 1 for your chest and abdomen; and 1 for your back). Remember to bright it with you when outside although you already apply sunscreen SPF 50 PA+++. Reapply every 2 hours and after swimming or sweating.
And please be careful if you use spray sunscreen. Please shake it evenly before spraying and use it distance from body 10-15cm. Do not spray them directly on your face. And we recommend to use professional primer on face since some body sunscreen may cause facial allergy. In addition, sprays are flammable, so let them dry before going near an open flame. And please place it in cool dray area away from heat, flame or strong light when you are not using it.
Well, let’s see our editor’s pick up sunscreens!

MISSHA All-around Safe Block Sebum Zero Sun (Line Friends Limited Edition) SPF 50 PA+++

The packaging is so cute! It is designed by Missha and Line Friends in 2016. This sunscreen is featured in its oil control function. Its ingredients Green tea and tea leaf gives soft care with sebum control. Antozone rose and tanaka extract sooth tried skin due to harmful environment. Use the gentle, water resistant All Around Safe Block Essence Sun all year round to hydrate and protect skin from stress, UV rays, and harmful environmental factors.

ETUDE HOUSE Sunprise Bye Sebum Sun Stick SPF50 PA+++

The sun stick combines sunblock and foundation together. It not only keeps skin soft and protects from ultra violet rays, but also tone your skin up naturally with pink beige color. The stick type is very easy to use and bring. 

 

This sunscreen is long-lasting super smart sun care. Its ingredients provence calendula has been used traditionally as medicinal herbs for treating acne and soothing skin. Caluendula in the sunscreen will let your skin comfortable and protect from UV rays. Especially, it is strong waterproof and sweat-proof. Don't forget to bring it when you prepare to travel in this summer. 


SULWHASOO Perfecting BB Cushion Brightening C21 SPF50 PA+++ Limited Edition

As we mentioned above, it is better to use professional primer or BB cushion which has sunblock ingredients on face. This sulwhasoo perfect BB cushion is SPF50 PA+++, it protects the skin from harmful UVA and UVB rays that cause photo-aging. 

 夏天说来就来,说好的减肥还没进行呢,怎么就要露肉了…..虽然减肥不成,但防晒必须做到家,毕竟一白遮百丑嘛~今天,小编就来带你扫一扫防晒的盲点,再看看有哪些超好用的防晒品,哇咔咔~~

首先,我们买防晒霜的时候最先会注意到的就是SPF值和PA值。那这两个英文到底代表什么意思呢?SPF(SUN PROTECTOR FACTOR) 即防晒系数,也是就皮肤抵挡UVB紫外线的时间倍数。 假如你晒了10分钟的太阳,皮肤就开始泛红,那么你用SPF15的防晒霜,即在10 * 15 =150 分钟内不会被晒黑。所以SPF值越大,防晒霜的防晒有效时间越长。JCK TREND所推荐的所有防晒霜的SPF值都达到了50,代表在500分钟(8.3个小时)内皮肤不会被晒黑。
PA (PROTECTION UVA) 即UVA保护数值(UVA是UV紫外线中的一种长波紫外线A),表示防止皮肤被晒老化的数值,因为UVA辐射会造成皮肤的老化和黑斑的生成。

  • PA+ 大约4小时,表示有效
  • PA++大约8小时,表示特别有效
  • PA+++强力防护,表示非常有效

所以综上所述,SPF值指的是防止UVB紫外线的指数,而PA值指的是防止UVA紫外线的指数。

除了选对合适的防晒霜,正确的使用也很关键。一般在出门前15-30分钟前涂抹防晒霜即可。如果使用的是乳液,经验之谈是每个部分抹一勺那么多(脸和脖子1勺,每只胳膊各1勺;胸部和腹部1勺;背部1勺)。另外出门后请随身带着防晒品,虽然用了SPF50的防晒霜可以保证在8小时内不被晒伤,但建议在出汗或游泳后重新涂抹。

 如果你使用的是防晒喷雾请格外小心。使用前先摇均匀,使用时距离身体10-15cm的地方喷,不要直接将喷雾喷在脸上。建议脸部用专业的隔离霜或者防晒BB,有一些身体用的防晒喷雾或者防晒霜会造成脸部过敏。另外,防晒喷雾是可燃的,所以在接近火源之前务必确保防晒喷雾已经干了。也不要将防晒喷雾搁置在暴晒的地方以免引发自燃。
 好啦,说了这么多,让我们看看本期推荐的有哪些防晒明星!

  

谜尚全方位优护控油型防晒霜SPF50 PA+++ (Line Friends限量版)

光看这款限量版的包装是不是就爱不释手了呢?这款防晒乳出自于2016上半年谜尚和LINE FRIENDS 合作的限量版,一共有5款,每款都有不同的特点。这款属于控油型防晒乳,涂上去之后非常清爽绿。茶水和绿树叶成分,控油,无油腻,打造干爽的肌肤。玫瑰和香木粉提取物,镇静呵护由外界环境受到刺激的肌肤。

 

爱丽小屋惊喜控油防晒棒SPF50 PA+++

集防晒和遮瑕美白的神器!棒状质地,便于携带。只要轻松转开,涂抹在肌肤上既能防御紫外线,又能自然修正提亮肤色,抚平毛孔凹凸不平的纹理。出门自带美颜相机效果哈!

自然乐园普罗旺斯金盏花防水防晒霜SPF50 PA+++

这款防晒霜有着出色的防晒力,让你在这个夏天大胆地露肉。更重要的是它的特点是超强的防水防汗能力,专为外出旅游、海边度假设计。自然乐园经典的金盏花配方,能够帮助皮肤舒缓放松,减少因为阳光带来的刺激性。这个暑假外出别忘记带上它!

雪花秀樱花致美气垫BB霜C21 SPF 50 PA+++夏日限量版

不知道是不是因为属于外貌协会的缘故,刚看到这款气垫的设计就被俘获了。这款限量版的神作出自韩国民间彩绘画家Donah Lee,樱花和蝴蝶的彩绘非常别致高雅。之前提到面部的防晒最好和身体的防晒乳区别开来,特别是对敏感性肌肤来说。所以我们也需要格外注重脸部肌肤的防晒。这款气垫专为夏天设计,有着超强的防晒指数,防止紫外线对肌肤造成的损伤。另外,气垫适合随身携带,方便您随时补妆。

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