Cosmetic or pharmaceutical preparations for improving hair quality and promotion of hair growth

Cosmetic or pharmaceutical compositions for improving hair quality or promoting hair growth based on alkali metal, earth alkaline metal and/or ammonium salts of thiocyanic acid, are characterized in that they contain as a further component at least one component or mixture of components selected among estrogens, sulphur, sulphide ions, vasodilators, skin-active vitamins, inorganic selenium compounds, amino acids, protein hydrolysates and carboxilic acids physiologically available in the skin, possibly together with known additives and carriers for hair cleaning and hair-care products. A synergistic improvement of hair quality and promotion of hair growth due to the components added to the alkali metal, earth alkaline metal and/or ammonium salts of thiocyanic acid could be observed.