We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [uv-protection]

Questions about protecting yourself from harmful ultraviolet radiation which causes both sunburns and snow blindness

Filter by
Sorted by
Tagged with
2
votes
0answers
64 views

Do polarized prescription lens also protect against UV? [duplicate]

My optometrist assures me that all polarized prescription lens will now also assure 100% UV protection. Is this true and if not how can I insure that I’m getting optimum UV protection from new ...
6
votes
2answers
88 views

What to look for in eco-friendly sunblock?

With sunblock it's relatively easy to know what to look for in terms of SPF, UV types etc, however with eco-friendly ones that aim to not put chemicals back in the ocean (used by surfers, swimmers, ...
6
votes
2answers
162 views

Can natural material be found in a temperate forest to help protect against snow blindness?

Snow blindness, also known as photokeratitis, is predominately caused by the sun's reflection off of snow. If one is caught out in the wild, ill prepared for snow, what could one find in a temperate ...
2
votes
1answer
33 views

Where can I find good UVI forecasts?

I normally use weather.gov and/or weather.com for weather forecasts. Neither provides UVI (or at least I can't find it). Also, I rarely go outdoors, so I don't have an intuitive sense of when I get ...
21
votes
3answers
3k views

Why should a good tent be UV resistant?

From my experience, any tent gets hot when in plain sunlight, so I wouldn't stay in it (and can't imagine why anyone would) + I'd rather be outside my tent when the weather's nice. I don't really ...
5
votes
2answers
125 views

How essential is the darkness/tint of a pair of sunglasses to protecting your eyes?

In addition to sunglasses, you can get clear safety glasses that claim "Blocks 99.9% of harmful UV rays". The advantage of clear safety glasses is that they can be worn both during dusk and after dark ...
7
votes
2answers
173 views

How to measure combined clothing and sunscreen?

As I understand it, you can't combine multiple suncreens to combine their SPF values. This makes sense as they all work on the same concepts and your skin can't simply "hold more" because it's two ...
8
votes
6answers
3k views

Eye safety when starting a fire with a magnifying glass

TL;DR What are some reasonable (ie: safe, portable, reusable) ways to start a fire with a magnifying glass without damaging my eyes from staring at the focused sunlight? Background I recently ...
4
votes
0answers
42 views

SPF Equivalence [duplicate]

With SPF 30 sunscreen, I am usually protected for an entire day and wont be getting more than a little darker. Now, I am getting low on SPF 30 cream but I have a large supply of SPF 15. Can I just use ...
6
votes
2answers
3k views

How much UV protection does different color linen provides?

I am going to South East Asia for quite some time, and was looking for appropriate clothing. Quite a few websites recommend linen clothes, and almost all of them recommend UV protective gear due to ...
5
votes
1answer
167 views

UV Protection while trekking at 5000m for myopic vision

I have trouble seeing distant things and have myopia. Thus I prefer glasses with my prescription number (which is both cylindrical and spherical). I want protection from UV rays as I am going to spend ...
9
votes
1answer
796 views

What level of UV protection is recommended for glacier travel?

What level of UV protection is recommended for glacier travel? For example, I have sunglasses which says 40% UV layer. Will this be ok for glacier trekking, or do I need glasses with higher level of ...
8
votes
2answers
2k views

How much side protection should sunglasses have?

I have noticed that most sunglasses leave quite a bit of gap on the side and only cover the "front" of the eyes. Does this give adequate UV protection, or are these types of sunglasses mostly "fashion ...
8
votes
2answers
192 views

Where can I get long but light bottoms for water?

I need clothing for kayaking in the summer. I already have the "heavyweight" equipment - thick neoprene longjohn and a whitewater cag. But for places where I need less protection from cold and ...
11
votes
3answers
403 views

Best sun protection for swimming

When I am going swimming in the pool my skin gets tanned due to sun. Which SPF value is suitable for my purpose? Should I go for some specific ingredient, so that the lotion won't dissolve in water? ...
5
votes
2answers
2k views

Extra strong sunglasses for sensitive eyes

I have a damaged pupil that stays partially dilated. And regular polarized sunglasses which I am wearing over the regular glasses aren't working better than my prescription sunglasses. I have a new ...
3
votes
4answers
407 views

When hiking should I always wear a shirt and sunscreen, or is just sunscreen okay?

Is it a viable practice to not wear a shirt, as long as you smear your body with sunscreen, if you plan to go hiking for hours (assuming reapplication)? Or is it advised to wear a shirt at all times ...
15
votes
2answers
15k views

Why does sunscreen not work all day?

All over the internet it says that sunscreen does not work all day, but does not say anything about why. Why does sunscreen not work all day? Does the matrials get destroyed by the UV rays? Or is it ...
14
votes
5answers
18k views

Do polarized sunglasses protect against UV?

My eyes are sensitive and tending towards cataracts. I'm told to avoid the Sun's UV, but many polarized sunspecs don't mention UV. I'd appreciate it if someone knows the answer.
10
votes
3answers
599 views

What is SPF in sunscreen cream?

What is SPF in sunscreen creams? I go to 2500m-4000m altitude. What should I use? And I've heard that SPF more than 55 is not for men. Does more SPF mean more sun protection?
1
vote
3answers
365 views

Sunblock for clothing-optional camping

What should I look for in a suntan lotion for a nude camping trip? I don't know what to look for when it goes on the whole body. Are there any ingredients that I should watch out for?
17
votes
5answers
10k views

At what point do I need snow goggles or glacier glasses when hiking?

I'll be backpacking Europe in the winter (snow and rain) and parts of my trip will be outdoors, such as hiking in Dolomites, Italy. For purposes of packing light and risk of losing expensive gear, I ...
16
votes
1answer
401 views

Is there simple guidance on sunburn risk associated with altitude?

When skiing, if the weather is good, I often come back with a better tan than if I have been at the beach. Obviously with altitude, there is less blocking of UV rays by the atmosphere. But how much ...
15
votes
1answer
14k views

How harmful is the rising/setting sun?

Often, while hiking, my companions and I treat the very early/late sun as being less harmful (as far as skin cancer and UV radiation are concerned). For example, we might not apply sunscreen ...
10
votes
2answers
959 views

Does a red headscarf or hat provide better protection from the sun?

I read in an old tourist guide (from the beginning of the 20th century) that during mountain walks on sunny days one should wear a red headscarf or a hat with red lining to avoid heat stroke, because ...
24
votes
2answers
53k views

Is it possible to sunburn through clothing?

I sat for 45 minutes last summer in the hot sun (100°F/38°C). I was pinned in on the bleachers so I wasn't able to get up and move. I could feel the sun burning through my pants. Now I have everyday ...
34
votes
1answer
50k views

What's the UPF of a T-Shirt or jeans?

Many outdoor clothing items advertise themselves with a UPF (Ultraviolet protection factor) of 30 or even 50. How does that compare with a normal cotton T-Shirt or a pair of jeans? Do I have to use ...
25
votes
7answers
14k views

Do polarized sunglasses protect against snow blindness?

Will regular polarized sunglasses protect me against snow blindness? And if not what type of glasses/goggles will protect me?