Age spots develop under the influence of sunlight and lead to dark patches on the skin. Scientists discovered that these spots contain many old, so-called senescent cells. These are cells that no longer divide and can contribute to signs of skin ageing. Due to these cells, the skin structure builds up in an unhealthy way and the behaviour of skin cells around the spots changes.
This finding highlights the link between sunlight and skin ageing. UV light from sun rays damages skin cells, causing them to show signs of ageing. Senescent cells produce substances that inhibit skin repair. As a result, age spots get their characteristic appearance and the skin becomes less supple.
Researchers are looking into new ways to improve the skin, for example with agents that remove those old cells. These so-called senolytics could potentially slow down skin ageing and also repair the skin if it is already older. So far, research has mainly been conducted on animals, and human studies are still scarce. Nevertheless, there are already products on the market that capitalise on this.
For people who care about their skin, sun protection remains important. By avoiding sunlight or applying sunscreen properly, you prevent too many of these old cells from forming in the skin. This helps to keep the skin healthy and supple for longer.
This knowledge helps us better understand how skin ageing works and opens up new possibilities for maintaining vital skin at a later age.
Source: Reason
