The most frequently encountered nettle species are common nettle (Urtica dioica L), small nettle (Urtica urens L.) and Urtica canabina L. Medical and cosmetic applications of nettle have a long history. In traditional herbal medicine nettle finds numerous applications, although the details of its biological activity are still scarce. In cosmetics, nettle is an efficient antidandruff and anidermatitis agent strengthening hair bulbs. It helps to dry the scalp and remove the dirt rendering the hair fluffy and thick. For the best effect, it is recommended to use nettle both internally (as herbal teas, tablets but also in salads, soups, etc.) and externally (on skin, as tonics and shampoos). The optimal period for harvesting the leaves is June-September and autumn or early spring for roots.