Bio-Klinik moisture-lock toner is suitable for use on even the most challenging skin, thanks to a natural composition free of perfume, preservatives or other irritants. Bio-Klinik products do not cause redness, do not itch, and do not sting. Firstly, wash your skin. Then apply Bio-Klinik moisture-lock toner to damp skin massaging the tonic into the skin for best absorption. Further nourish the skin by continuing your routine with a Bio-Klinik face or body cream. With consistent use of Bio-Klinik tonic and creams, skin can once again properly fulfil its protective function, becoming stronger in the process and aging less rapidly.