What does "photoaging" refer to?

The term "photoaging" specifically refers to the changes in the skin that result from prolonged exposure to ultraviolet (UV) radiation from the sun. This includes a range of skin damage such as wrinkles, loss of elasticity, pigment changes, and rough texture. Photoaging is distinct from other types of aging as it is primarily caused by environmental factors, particularly sunlight.

While aging can naturally lead to changes in the skin, photoaging emphasizes the role that UV exposure plays in accelerating these changes. It highlights the importance of protecting the skin from sun damage to maintain a youthful appearance. Hence, in the context of the choices provided, the correct interpretation of photoaging aligns directly with the effects of sun exposure on the skin.