Skybright Colloidal Silver is very fine particles of 99.9% pure Ionic Silver dispersed in laboratory grade water. Colloidal Silver supports the body's immune system and defences for natural healing. Silver has antibacterial properties that work by disabling the specific enzyme that many forms of bacteria, viruses and fungi utilize for their own oxygen metabolism. Colloidal Silver Nasal Spray can be used to help clear nasal infections/irritations.