Cutaneous biophysical factors related to age and body location

The biophysical properties of human skin, such as hydration, elasticity, sebum content, and transepidermal water loss (TEWL), are influenced by both age and body location. These factors play a critical role in dermatological health and the efficacy of skincare products. Aging is generally associated with decreased hydration, elasticity, and sebum production, while TEWL increases, indicating a decline in skin barrier function. Additionally, different anatomical locations exhibit distinct biophysical characteristics due to varying densities of sebaceous glands and exposure to environmental factors. For instance, sebaceous gland-rich areas like the forehead show higher sebum content, while the palms exhibit lower hydration levels. This review presents a comprehensive analysis of current research on the effects of age and body location on skin biophysical properties to guide future dermatological studies and skincare product development.