Aging skin refers to the visible changes in the skin that occur over time. These changes are caused by a combination of factors, including sun exposure, genetics, and lifestyle habits. Common signs of aging skin include wrinkles, fine lines, loss of elasticity, and uneven skin tone.

Related terms:
* Photoaging: This term specifically refers to the visible signs of aging caused by sun exposure.
* Wrinkles: Fine lines and creases that develop on the skin as it loses elasticity.
* Hyperpigmentation: Dark spots or patches on the skin caused by increased melanin production.
* Loss of volume: As we age, we lose fat and collagen in the face, leading to a sunken appearance.