Curaprox Perio Plus Support CX-P + CHX 0.09% Toothpaste eliminates the foaming agent SLS and so does not impair the effect of Chlorhexidine (CHX) in mouthwash. Perio Plus+ Support toothpaste features CHX 0.09% and CITROX®/P formula. CITROX® comes straight from nature. It is a natural bioflavonoid extracted from bitter oranges (Citrus aurantium amara) To ensure it adheres well to the teeth, gums and oral mucosa for a long-lasting effect, it is combined with another natural ingredient – polylysine amino acids – to create the CITROX®/P formula.