As we get older, the skin cells' ability to produce the building blocks of the skin decreases. The fiber network of collagen and elastic fibers becomes weaker and more disorganized. The distribution of the water-binding structures changes and the skin's water content decreases, which becomes visible when the skin loses some of its volume. At the same time, the fat layer in the skin becomes thinner.

Age changes in the skin are shown, among other things, by the skin becoming lax, wrinkled, less elastic and low in moisture.

The first wrinkles start to develop from the late 20s. These are typical facial wrinkles, which occur when you use the muscles in your face, for example when you talk, smile or squint your eyes. From the age of 40, age-related changes become more evident. After menopause, the skin changes as a result of changing hormonal influences. The skin becomes thinner and less elastic, and wrinkles become more prominent.

Men often get wrinkles a little later than women, but the wrinkles tend to be deeper. This is because men have thicker skin and higher sebum production than women.

Heredity and age are the most important reasons why we get wrinkles, while smoking, UV rays and air pollution are the important factors that contribute to wrinkles developing prematurely. So what is called premature ageing. In premature ageing, free radicals exert harmful oxidation on healthy cells and other structures in the skin. These oxidative processes are called oxidative stress. Oxidative stress plays a crucial role in skin aging. The skin's antioxidative properties are important defense mechanisms to reduce the consequences of oxidative stress. External causes of oxidative stress are often more powerful than the skin's antioxidative defenses can handle. This causes premature ageing. This means that you get signs of aging and impaired function in the skin faster than the body's own processes would indicate.