Skin aging is a complicated biological process affected by a mix of intrinsic and extrinsic factors. As we age, our skin and other body systems, gradually lose the ability to operate as they did in our youth. There’s a progressive change in the balance of many molecules and particularly hormones excreted by other glands and organs within the body. For instance, women produce less oil (sebum) after menopause. This can make it challenging to keep the skin moist, leading to dryness and itching. Men, on the other hand, experience a minimal decrease in oil production, and do not have the same problems with dry skin, until they are well into their 80s. Many of these changes are genetically determined and cannot be stopped.