Oddball question. Sunscreen?

[xxispawn01xx]

I have never applied SPF 50 or any sort of uv blocking in my life. At most, most of my body accept for my bald head is covered during 40min of exposure running in the park. Is there any anti aging affect I should be worried about? Is there a proven level (ie after 2 hours of sun exposure on a cleary sunny blue sky day we enter the realm of anti-aging UV damage)? People just put it on all the time, but what is the guidance here for that

More sun light->more activity->more sweat I wonder how efficacious it is to wear something like that since it will sweat out into your oily head during the day

What prompted this was seeing this photo: https://www.cbsnews.com/news/trucker...s-on-the-road/
https://cbsnews1.cbsistatic.com/hub/...e-face_web.jpg

[Austin Baraki]

I'm not sure I fully understand the question.

Photoaging is a well-known phenomenon, and there is no single exposure threshold that applies to all people for a variety of reasons.

If you are routinely exposed to strong sunlight in a particular area, applying sunscreen would reduce the risk of these processes as well as certain other skin conditions, including skin cancer.

[Michelle1]

Hi,
I’m from Australia we have very strong sun here, our weather reports include a UV rating to help us know how much strong the UV will be on any given day.
Wearing sunscreen is a good option but not the only option. In your circumstances a hat and sunglasses might be a good option when running.

All sunscreen has an “spf” rating the general ones are 15+ 30+ and 50+
The bigger the number the longer the sunscreen protects you. How the rating system is calculated: If you get sunburnt in 10mins but you put on 15+ sunscreen it will take you 15times longer for you to get to the same level of burn. So you can still get burnt wearing sunscreen. Some types of skin is more sensitive to sunburn that other types of skin. Generally, the more pale your skin the faster you will get burnt, but darker skin can still be damaged by the sun even if you don’t get burnt.

You are correct sunscreen can be be washed off through sweat or swimming, there are sunscreen formulations that say “sport” that are thicker and less greasy that are a bit better.

here is a link to the australian cancer council for more info on sunscreen.

https://www.cancer.org.au/preventing...g-skin-cancer/