How the sun’s rays damage the skin

It is the smallest part of the solar spectrum (UV spectrum) that is biologically most active and most responsible for acute and chronic skin damage.

UVA rays penetrate deeper into the skin, damaging its middle part (dermis). They are responsible for pigmentation and premature aging of the skin.

UVB rays are absorbed in the uppermost layer of the skin (epidermis) and are responsible for the acute response of the skin in the form of redness and burns during excessive sun exposure, leading to degeneration and aging of the skin.

UVA and UVB rays are one of the reasons for the increased risk of skin cancers.

UVC rays absorb the ozone layer and they do not reach the Earth's surface.

The Earth's air cover stops more than 95% of UV rays, and therefore the issue around "ozone holes" and air pollution does not lose its relevance.