Which of the following is a common sign of aging skin?

The appearance of fine lines and wrinkles is a common sign of aging skin due to several factors related to the aging process. As individuals age, the skin undergoes changes that result in decreased production of collagen and elastin, which are essential proteins that help maintain skin's structure and firmness. Over time, the skin loses its elasticity and resilience, leading to the formation of fine lines and wrinkles, especially in areas that are most frequently exposed to sun and other environmental stressors.

Additionally, as skin cells turnover slows down and moisture retention decreases, the skin can become thinner and less plump, further contributing to the visibility of fine lines and wrinkles. Factors such as sun exposure, lifestyle choices, and genetics also play significant roles in how quickly these signs appear. This makes the identification of fine lines and wrinkles a key aspect in recognizing aging skin.