Circadian rhythms and cosmetology
The skin is not just a barrier structure, it takes an active part in maintaining the homeostasis of the entire body

Our planet has cyclically stable changes in photoperiods — annual and daily. This periodicity has existed for millions of years and has led to the emergence of a mechanism that controls changes in the body that occur when lighting conditions change during the day. Thus, organisms have developed “biological clocks” determined by a genetic program, or circadian rhythms (CR), which determine the rhythms of the biochemical, physiological and behavioral activity of all life on earth.
