Is winter sunbathing harmful? If you don't protect yourself properly, it can cause damage to your skin, and more. In the mountains, snow can increase UV exposure by almost doubling, with consequences that can even lead to corneal burns, known as "snow blindness." The cold doesn't protect against sun damage: it often just makes it less noticeable.
Why sunbathing in winter is bad even without heat
Many people associate sun damage with summer heat. In reality, skin and eye damage is caused by UV rays, not temperature.
UV rays are present all year round :
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UVA rays penetrate deeply and contribute to skin aging ;
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UVB rays are responsible for sunburn.
Both are present even in winter, regardless of the cold.
Snow can nearly double your UV exposure
Fresh snow is made up of billions of ice crystals and air that scatter and reflect sunlight very effectively.
According to the World Health Organization, snow and the ice they can reflect up to 80% of UV rays. This Why the rays Not they strike from above (directly from the sun) , but also from below (reflections from the snow surface) .
The result is a much more intense exposure than perceived. Here's why you need to protect yourself from the sun also in winter , especially in the mountains.
Altitude further increases the risk
Besides snow reflection, there's another factor to consider. UV exposure increases by 4% to 5% for every 1,000 meters of altitude. Skiers, snowboarders, and hikers at high altitude they are therefore exposed at a significant risk of sunburn and long-term skin damage, due to the greater intensity of ultraviolet rays.
Cold and wind reduce the perception of risk, but not the impact of UV rays.
The Corneal risk: what is snow blindness?
One of the most interesting and least known effects concerns the eyes. So-called “snow blindness” is a photokeratitis , that is to say a burn of the cornea caused by excessive exposure to UV rays reflected from snow.
May cause:
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severe pain
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tearing
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feeling of sand in the eyes
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difficulty opening the eyelids
It is a temporary damage in most cases, but painful And avoidable with adequate protection.
Sunbathing in winter is harmful if not done with adequate protection. Not only to the skin, but also to the cornea. Snow reflects up to 80% of UV rays, and altitude further increases exposure. The cold isn't a shield: it's just an illusion of safety. Protecting your skin and eyes in the mountains is essential to prevent immediate and long-term damage.
