Kool-Aid is usually sold in powder form, in either packets or small tubs.
The actual beverage is prepared by mixing the powder with sugar (the packets of powder are usually, though not always, unsweetened) and water.
The drink is usually either served with ice or refrigerated and served chilled. Additionally, there are some sugar-free varieties.
Kool-Aid is also sold as single-serving packets designed to be poured into bottled water, as small plastic bottles with pre-mixed drink. Furthermore such novelties as ice cream or fizzing tablets.
More noteworthy, The colors in Kool-Aid will stain, and hence the substance can be used as a dye for either hair or wool.