Drycleaning is a great way to preserve your clothes - It doesn't shrink, stretch, fade or alter your garments. It works by submersing your clothes in a solvent called Perchloroethylene with special detergents, and then tumbled dry.
Wetcleaning however uses the worlds most benign and abundant solvent - water. Non-toxic detergents and conditioners are used to lift dirt out of the garment and revitalize it, without harming your clothes. The garment is then pressed and hung. It's a cleaner service, and provides all the benefits of drycleaning.