防晒霜防晒系数(SPF) 是不是越高越好?
防晒霜的防晒系数（Sun Protection Factor, 英文缩写SPF)是测量防晒品对阳光中紫外线的防御能力的检测指数，判断依据是皮肤的最低红斑剂量. SPF数值适用于每一个人，其计算方法是：SPF=最低红斑剂量（用防晒用品后）/最低红斑剂量（用防晒用品前). 假设紫外线的强度不会因时间改变，一个没有任何防晒措施的人如果待在阳光下20分钟后皮肤会变红，当他使用SPF15的防晒霜时，表示可延长15倍的时间，也就是在300分钟后皮肤才会被晒红, 20（分钟）*15（SPF）=300分钟 。以此类推。
SPF虽然是防晒的重要指标，但并不表示SPF值越高，保护力就越强。例如SPF15有93%的保护能力，而SPF34却只有97%的保护能力，但是，SPF值越大，其通透性越差，会妨碍皮肤的正常分泌与呼吸。SPF值越大,化学防晒剂添加的也就越多，而这类防晒剂是有腐蚀性的，添加的越多，腐蚀性也越强. .此外,由于防晒系数过高的产品， 相对而言, 质地也会比较油腻、厚重，会容易产生阻塞毛孔的现象，甚至滋生暗疮和粉刺。且一些属于化学性防晒的高系数防晒品，在经过长波紫外线的照射下，吸收热能后，多半会转换成其它物质，导致肌肤出现过敏的现象.
以东方人的肤质来说，日常防护可选用SPF10～SPF15的防晒品；如果从事游泳、打球等户外休闲活动，SPF20就足以抵抗紫外线的伤害，而不会给肌肤造成负担 . 如果去海边，阳光直射的话就选择SPF30的防晒品.
These feel great. Wore them to a rave and they did just fine.
- Liberia
Been getting these forever, love the fit, 13 4E. Perfect, comfortable.
- Switzerland
I always order these shoes for my hubby. He never wears any other shoes but Nike.
- Switzerland
Finally able to order my correct size without getting a size bigger to get the width I need.
- Switzerland
Comfortable, good sole and inner sole. Have worn this make for several years -- hope they keep making them.
- Singapore
Nike still makes a very high quality shoe. It offers excellent support and durability. This my second pair of this modal.
- Singapore
Sneakers fit as advertised; it was in excellent condition; fit was comfortable, sturdy, and it works for casual use which is what I wanted.
- Singapore
I have a wide foot and they fit well. I use it for working out, yard work and errands. I would not run in this shoe but on a stair master or bike no problem.
- Switzerland
Been wearing for 3 weeks and I am very happy with them.Have been wearing $130 shoes up to this to get good Arch support but these give almost as good at less than half the price, would buy again.
- Switzerland
I've worn Nike Air Monarch IV for years because they are so comfortable. These are excellent cross training shoes and have been ideal for my needs. It's not always easy to find them in my size, but had them at a great price!
- Singapore
2023-12-04 04:21:54--
The style of this shoe is trendy fashion, workmanship and quality are very pass, the shoe size standard, wear on the foot is very comfortable comfortable beautiful!
2023-12-04 04:19:29--
Great product and quality, I will probably buy all of the colorways from this seller! Again, great product! Seller does take its time to reply to your messages, they are very polite. Thank you! Expect more orders from me!
2023-12-04 04:17:04--
The shoes are the same as in the picture, the style is very relaxed and casual, the appearance is also very fashionable and simple, I really like them, after receiving the shoes, I have a careful look, very classy and formal feeling, the workmanship is very careful, the details are also very in place, the cost performance is also very high, I recommend to buy.
2023-12-04 04:16:59--
Top seller , top item!! Nice With Nike Jordan Logo I bought matching pairs for me and my boyfriend, and I love these! the material and quality is spot on, however one of my pairs that I ordered didn't have the same material on the inside and I messaged the seller to try and get a replacement but my boyfriend's pair is perfect, will definitely be ordering more from this seller!
2023-12-04 04:15:42--
Amazing quality !!! Will be ordering some more colours
2023-12-04 04:15:31--
I love them, came within 2 weeks. Communication was amazing, highly recommend.
2023-12-04 04:11:59--
Looks just like the real thing it’s amazing worth every penny no point in buying the real ones
2023-12-04 04:11:36--
The shoes are easy to wear, the design of the shoes fits the shape of the foot, great, very satisfying!
2023-12-04 04:10:52--
the quality is also good, exquisite workmanship, soft soles, good elasticity, very comfortable to wear, affordable price, satisfied
2023-12-04 04:10:20--
10/10!!Couple of unnoticeable things that make them look not real but still really good dupes. Took about 3 weeks to come. True to size! Buy them!
2023-12-04 04:07:17--
amazing quality, I'm really happy with both pairs, hard to spot any flaws compared to original. came with authenticity tag and keyrings too. just over two weeks delivery to the UK so I'm very impressed! thanks so much!!
2023-12-04 04:05:22--
Gucci's black sneakers pure sophistication with its sleek design and iconic logo stamp. Comfort and durability, making them a solid investment for any sneaker enthusiast. Perfect for any occasion, the black color compliments any outfit effortlessly. A must-have in any fashion-forward person's wardrobe.
2023-12-04 04:05:07--
REAL 1:1 TRACK SHOES I BOUGHT THESE BECAUSE IM NOT SPENDING $1K ON SOME THAT CAN LOOK JUST LIKE THEM AND EVEN BETTER DONT EVEN WAIT BUY THESE BEFPRE THERE GONE FOR GOOD!!! IT TOOK ABOUT 2 WEEKS AND 3 DAYS TO GET HERE IN ATL. ITS DEFINITELY WORTH THE WAIT AND I WILL BE PURCHASING THE WHOTE AND GRAY ONCE ASAP!!!!
2023-12-04 04:04:33--
The shoes are the same as in the picture, the style is very relaxed and casual, the appearance is also very fashionable and simple, I really like them, after receiving the shoes, I have a careful look, very classy and formal feeling, the workmanship is very careful, the details are also very in place, the cost performance is also very high, I recommend to buy.
2023-12-04 03:58:42--
They are a bit small made so can’t wear them. They are perfect tho so will sell them on. Unfortunately the back was squashes so bad when it arrived. Would deffo buy from this seller again tho.
2023-12-04 03:58:08--
Review from Angela 😀
2023-12-04 03:57:48--
Good workmanship. I like it very much
2023-12-04 03:56:31--
Nice quality tho one of the Nike signs was looking a little rough around the edges.
2023-12-04 03:56:26--
Excellent shipping. excellent products. definitely ordering with them again.. love it !!
2023-12-04 03:54:42--
Nice quality! . The shipping was very fast, it arrived as soon as the item was placed to transit. Would buy from this seller again.
2023-12-04 03:54:27--
Love this package so much! I get tons of compliments on it.Came very fast. I will be purchasing more packages from this amazing seller. Adding it packages to cart as we speak.
2023-12-04 03:53:29--
high quality and inexpensive
2023-12-04 03:51:12--
Color is a little off
2023-12-04 03:48:42--
The shoes are good, the logistics are fast, and the whole is satisfactory
2023-12-04 03:47:35--
The shoes are of good quality and good workmanship. The size is suitable and the style is very popular.
2023-12-04 03:47:32--
Great quality of product and extremely fast delivery service. Very happy and will be ordering from this seller in the future.
2023-12-04 03:46:45--
The shoes are of good quality and exquisite workmanship. They are comfortable and fit your feet. You donamp;apos;t feel tired when you run. Excellent quality and reasonable price, weamp;apos;ll buy it back next time.
2023-12-04 03:45:22--
Great shoes. Love the color,It is nice. It is comfortable
2023-12-04 03:45:02--
I absolutely Love these shoes , Great quality and very beautiful
2023-12-04 03:44:06--
Shoes are of good quality, size, standard style, nice looking, comfortable and breathable
2023-12-04 03:43:24--
Received the shoes, the quality is very good, very comfortable to wear, do not wear feet, the size is appropriate, come again next time
2023-12-04 03:43:06--
Comfortable and fashionable, the size is appropriate, there is a certain height, there is a sense of elongation, very good-looking, logistics is fast
2023-12-04 03:41:29--
Superior seller!!!!!! Box came in perfect condition in perfect condition also and fast shipping !!! I could not ask for anything better than this!!!
2023-12-04 03:40:29--
received the recorder, immediately installed. the picture is clear from both cameras, the application works. the seller is responsive, in the chat answers all the questions.
2023-12-04 03:39:18--
Look like original love it
2023-12-04 03:38:33--
Great products of the best quality ,Very Fast Shipping,Best Service !! Order From This Amazing Person.I will order more from this seller in the future,Thank you !!!!
2023-12-04 03:38:09--
I like this ring! Very high quality material. Very distinctive
2023-12-04 03:36:06--
i paid and never got my ring. i talked with the guy many times and he just said “it’s held in a place where i can’t control it” and reassured me he was going to refund and never did. DONT DO IT!
2023-12-04 03:33:47--
Perfect. Just like the picture and so fast. Very good quality
2023-12-04 03:27:59--
Excellent quality for the price. Would definitely recommend this seller. Thank you!
2023-12-04 03:27:14--
ottimi in tutto spedizione veloce
2023-12-04 03:27:07--
Bad doesn’t fit me
2023-12-04 03:26:20--
Overall good for the price. I would buy again. My only qualm is it is much lighter than the original and it will need some sealant so the color doesn’t change. But for the price it’s great.
Thanks for the quick shipping.
2023-12-04 03:26:17--
Real review ! This item is as pictured a little smaller than I thought but overall great !
2023-12-04 03:24:26--
Beautiful bangle. Delivery took just under a month.
2023-12-04 03:23:19--
Amazing quality and it only took 10 days to get to the UK!!
Will be referring others to this seller.
Thank you so much
2023-12-04 03:22:49--
item is perfectly as described and came pretty quickly
2023-12-04 03:20:28--
The box is a bit squashed but Im really really happy about the product im more happy to buy more things from this seller i really recommend it
2023-12-04 03:19:47--
Looks and feels super fake.
2023-12-04 03:18:53--
Although this is very pretty and dainty - I thought I was receiving the necklace shown in the first two pictures of the description. The necklace I did receive is the one in the last pics - it seems it may break very easily - hoping it does not because I do like it.
2023-12-04 03:17:12--
looks just as picture
2023-12-04 03:07:17--
took a while to arrive but it's worth the wait.Really lovely looking earrings.
2023-12-04 03:03:17--
Cost performance is very high, the boss is very good, service enthusiasm. The delivery speed is fast, we will place an order next time
2023-12-04 03:01:44--
Ordered for my son as I bought 3 previously from this seller.. he loves it. I have been wearing my ring since I bought it and it hasn’t discoloured only a few scratches but that’s genuine wear and tear with me wearing it constantly. I highly recommend this seller!
Displaying 781 to 834 (of 834 reviews)
