Nettle Urtica dioica L. belongs to the Urticaceae family, it is commonly present over entire Poland. The herb of nettle is rich in mineral components mainly silica, calcium, iron, flavonoids, organic acids (e.g. formic, acetic acid) and a large number of vitamins (A, B2, B5, C, E and K). The raw material presents traditional use as a diuretic in urinary tract inflammations, in dermal and rheumatic conditions (e.g. gout), as well as urolithiasis. In cosmetics, the herb of nettle is used to strengthen damaged and greasy hair, as well as to wash acne complexion.