"There are many treatments, particularly those that treat cellulite, that work best as part of series," says Mikesell. "Opting for one won't necessarily give you the desired results."
In this case, package deals that offer multiple treatments or subscription-type options can be a good bet. Just read the fine print to make sure you don't get taken for a ride. "You need to understand exactly how or why you can cancel and get your money back," cautions Theirsch. "Ask what happens if the spa were to get sold or go out of business," he adds.
Image via Getty
Image via Getty