biological, environmental, and lifestyle factors behind neck sagging, along with prevention strategies and treatment options that support healthier neck skin over time.
3. Impact of Sun Exposure on Skin Elasticity
Sun exposure is one of the leading external causes of premature skin aging, including sagging of the neck. Ultraviolet (UV) rays penetrate deep into the skin, breaking down collagen and elastin in a process known as photoaging.
Studies suggest that up to 80% of visible aging signs—such as wrinkles, discoloration, and sagging—are linked to cumulative sun exposure. Because many people
