5 Major Causes of Skin Aging Many things cause our skin to age. Some things we cannot do anything about; others we can influence. One thing that we cannot change is the natural aging process. It plays a key role. With time, we all get visible lines on our face. It is natural for our face to lose some of its youthful fullness. We notice our skin becoming thinner and drier. Our genes largely control when these changes occur. The medical term for this type of aging is “intrinsic aging.” We can influence another type of aging that affects our skin. Our environment and lifestyle choices can cause our skin to age prematurely. The medical term for this type of aging is “extrinsic aging.” By taking some preventive actions, we can slow the effects that this type of aging has.