Nano Silver is ultra-fine nano silver particles suspended in purified water. The particles are typically 0.01 to 0.001 of a micron in diameter (about four hundred thousandths to four millionths of an inch), with a positive electrical charge place on each silver particle. The silver particles in Nano Colloidal Silver contain a positive charge and are attracted to viruses, fungi, bacteria and other single celled pathogens (disease causing organisms) which contain a negative charge. When the silver particles attach themselves to these pathogens, they disable the pathogen\'s oxygen metabolism enzyme, suffocating and killing the virus or bacteria. These pathogens don\'t have a chance to develop resistant strains. Once the pathogens are dead, the silver particle releases its bond and searches for a new pathogen to attach to. The dead pathogens are then cleared out of the body by the immune, lymphatic and elimination systems.Nano Colloidal Silver leaves these tissue cell enzymes intact. Nano Colloidal Silver differentiates between the beneficial bacteria and the harmful disease causing organisms. The beneficial bacteria in our bodies contain a positive charge, therefore, the positively charged silver particles are not attracted to the positively charged good bacteria. This makes Nano Silver absolutely safe, However E.U. Regulators require labelling for topical use only and thus nothing in this product description is intended to suggest you use the product any other way. Packaged in Dark Violet Glass for optimum shelf life. Composition:purified water with 15mg / l (15ppm) ultra-fine particles of pure, 99.99 non-compound silver.