Wrinkles significantly affect one's perceived age.
It's something we'd all rather avoid for our entire lives, but as we age, it appears out of nowhere and torments us.
Wrinkles are our arch-enemy. Do you know what causes them?
Originally, collagen fibers in the dermis are tightly packed and intersect with each other. This is why the skin is firm and maintains its elasticity.
However, prolonged exposure to ultraviolet rays can cause these collagen fibers to break down or activate enzymes that break them down, leading to wrinkles and sagging.
It is believed that reactive oxygen species, which are generated when exposed to ultraviolet light, play a significant role in this.
Ultraviolet A rays (UVA) penetrate deep into the skin and can pass through clouds and window glass, so caution is needed all year round.
Furthermore, even in daily life where you are not exposed to strong direct sunlight, it gradually affects your body.
Eventually, this manifests as wrinkles and sagging... That's the scary thing about photoaging.
On the other hand, ultraviolet B rays (UVB) do not directly reach the dermis of the skin, but they are not entirely unrelated to the formation of wrinkles.
It is said that it activates enzymes that promote wrinkles, breaks down collagen in the dermis, and causes wrinkles.
To combat wrinkles and sagging caused by photoaging, it is essential to protect against both ultraviolet A (UVA) and ultraviolet B (UVB) rays.