UVB rays are known to be responsible for sunburn, DNA damage and the development of skin cancer (with long-term exposure). UVA radiation also contributes to all these processes to some extent. However, UVA radiation can penetrate deeper into the skin, leading to accelerated aging, wrinkles, fine lines and pigmentation changes.
The amount of UVA and UVB radiation reaching the Earth varies depending on the seasons. This depends on both the angle of the sun in the sky and the latitude and time of day. For example, at latitudes close to the equator, the amount of UVA and UVB radiation remains approximately the same throughout the year. At the same time, people living far from the equator may spend less time outside in the winter, and when they leave the house they often have almost all of their skin covered except part of their face.
But UVA radiation can reach us through clouds and windows. Although our exposure to these rays is minimal, skin damage caused by UV exposure accumulates over decades. Therefore, it is better to do everything to protect your skin.
It may be beneficial to protect your skin by applying sunscreen during the winter months. They are designed to reduce exposure to both UVB and UVA rays, although they are generally more effective against UVB rays. They mainly prevent DNA damage and burns.
Numerous studies show that regular sunscreen use over many years effectively protects against skin damage, photoaging, and skin cancer. The greatest effect of using this cream is seen when applied to the skin every day.
It is especially important not to forget sunscreen when skiing, snowboarding, spending a lot of time outside, at high altitudes, in snowy mountains. Both altitude and snow can increase the dose of UVA and UVB radiation a person receives. Snow can reflect up to 80% of the UV radiation emitted by the sun, nearly doubling the dose received. Additionally, every 1000 feet (about 305 m) increase in altitude results in a 10% increase in UV exposure. Therefore, it is also important to use special clothing and sunglasses in this case.
News materials cannot be equated with a doctor’s prescription. Consult an expert before making a decision.
Source: Ferra
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