Eureka! Institutional Repository

Nowadays cosmetology has made tremendous progress. For slowing down the aging of the skin and restoring its youthfulness, it has become a great cosmetological research and progress in the production of cosmetic products. Αs a result, it has been more difficult to choose not only the best cosmetic products available but also the most suitable for the requirements of its skin. However, in order to make possible the action of cosmetic products, they must be capable of penetrating the normal barrier, which prevents not only the entry of foreign substances from the environment into the human organism but also the exit of its biological components. This normal barrier is the skin which consists of the epidermis, the main skin or dermis and the subcutaneous or subcutaneous tissue. The rules and mechanisms of crossing the barrier from the various pharmaceutical creams or ointments as well as from the cosmetic products are of great interest to the aestheticians, cosmetologists and dermatologists because they depend heavily on the therapeutic or cosmetic effects.