Abstract

The human skin is a complex and multifunctional organ that protects the body from external physical, chemical and infectious attacks. It is not only a barrier shielding of the human body from extrinsic factors. It also functions as a sensory organ, prevents the organism from losing water through evaporation and is the site of immunological defence mechanisms and bio-synthesis (e.g. of vitamin D3).

In order to fulfil its various functions, a good skin health is important. An essential indicator of the skin’s health condition is its visible appearance. A firm, youthful-looking skin with a radiant complexion and natural warm glow is not only a desirable feature of beauty, but also indicates a good state of health.

However, intrinsic and extrinsic influences like lack of sleep, a poor nutrition, stress, air pollution or solar radiation can cause the skin‘s radiance to fade. Both factors promote an overproduction of reactive oxygen species (ROS) and lead to a state of oxidative stress, a major cause of skin damage and premature skin ageing [1].