Powders are preparations consisting of solid, loose, and dry particles of varying degrees of fineness. They are smooth to touch and nonirritating to skin. Powders generally range from 0.1 microns to 10 microns in size and are either swallowed or may be administered with water. They are marketed as single-dose and multidose powders. Each dose is packed in a separate container, called a sachet or vial. An example is the eutectic powder.