ACS 200 is the most effective colloidal silver available.Silver is a naturally occurring element and has been used extensively throughout recorded history for thousands of years in many antibacterial applications.Not all silver products have the same potency; research evidence suggests that colloidal silver which has microscopic nanoparticles can enter cells more easily than larger ones.Colloidal silver can be applied topically for its soothing, moisturizing and protective effects.IngredientsUltra-Pure Deionized Water 99.999% Pure Silver (Elemental Silver) 350mcg Directions For UseFor external use and water sanitisation purposes.ACS200 can be sprayed on to any surface and into the air.ACS200 contains 200ppm of elemental silver. PrecautionsKeep out of direct light.Do not contaminate or touch fluid in bottle.Keep out of reach of young children.