How does UVA radiation affect the skin?

UVA radiation has a significant impact on the skin due to its ability to penetrate deeply into the dermal layers. This deep penetration causes changes at the cellular level that can lead to skin aging, such as the formation of fine lines, wrinkles, and loss of elasticity. The damage occurs over time and is primarily a result of oxidative stress and the breakdown of collagen and elastin fibers, which are essential for maintaining the skin’s structure and firmness.

Unlike UVB radiation, which is responsible for causing immediate sunburn, UVA radiation contributes to long-term skin damage without producing visible immediate effects. This characteristic makes it particularly insidious, as many individuals may not realize they are experiencing harmful effects until significant aging signs appear. Thus, understanding the influence of UVA radiation is crucial for effective skin care and protection strategies.