For our early ancestors, the hair on the head and body served as protection against environmental influences such as cold, wetness, sun, and injuries. The body hair decreased and what was left of it now functions as a characteristic of the (male) gender. The protective functions were taken over by clothing. The function of the main hair has also changed significantly. Today, hair is essentially an expression of individual personality. With your hairstyle, you send out social, psychological, and erotic signals. It goes without saying that most people want beautiful, full, shiny hair and an appealing hairstyle. Both can significantly increase personal charisma and attractiveness.