ABSTRACT
Human skin is the largest organ of the human body. It is an organic
complex system that covers and protects the body from the external
environment. Skin can be seen as a structured material composed
of different layers. Each layer has a specific barrier function, such as
to be a barrier against temperature changes, a barrier to ultraviolet
radiations and microorganisms. Furthermore, the human skin has
an important function in our immune system and it is crucial
for our somatosensory system. A well-functioning skin is able to
prevent excessive trans-epidermal water loss. There are hairline and
exocrine glands, located in skin, which deliver hormones in order to
adjust our body to environmental changes.
