Which of the following is NOT considered an intrinsic factor in skin aging?

Intrinsic factors in skin aging are those that originate from within the body and cannot be controlled or altered by external influences. Genetics plays a significant role as it determines the natural aging process and predisposition to various skin conditions. Hormonal changes, such as those occurring during menopause or other life stages, also affect skin elasticity and moisture levels, influencing the aging process. Metabolic changes, which are related to how the body processes various substances and maintains homeostasis, can impact the skin’s overall health and appearance as well.

Sun exposure, on the other hand, is considered an extrinsic factor in skin aging. It results from environmental influences and lifestyle choices, leading to photoaging characterized by wrinkles, pigmentation, and a loss of skin elasticity. Thus, it is not an internal aspect that affects the skin’s aging process but rather an external factor that can be managed to some extent by applying sunscreen and limiting time in direct sunlight.