Nail Polish Remover
Nail polish remover is typically the use the average person associates with acetone, which works on any of the various types of bonding acrylic. Acetone for this use is dilute, usually under 79 percent acetone per bottle, because it is an irritant otherwise. It removes nail polish much faster than non-acetone removers.
Paint Remover
Many paint strippers and thinners contain some acetone, the percentage of which determines the job it's intended for. Acetone is almost never sold as 100 percent undiluted solvent because pure acetone can have violent reactions with some types of wood, plastic, and human skin.
Degreaser
Acetone makes for an excellent degreasing solvent, and for this reason, microelectronic components are often dipped or soaked in it during the manufacturing process to ensure a perfectly consistent, inert product. Sometimes, for this purpose, a fine mist of acetone is sprayed on electronic components.
Dissolving Superglue
One hundred percent acetone, which can be obtained from labs and pharmacies, is one of the best ways to remove cyanoacrylates, which bond extremely quickly to various surfaces. Acetone used for this purpose is applied much the same way as superglue itself, with a tiny dropper-style dispenser.