Before making your appointment, pay a surprise visit to the spa or salon. If you discover an untidy and dirty waiting area, you can only imagine what the treatment rooms are going to look like. "You definitely want to look for cleanliness, because you don't want to go to a dirty spa," explains Hamilton. If you do, you run the risk of leaving with a nasty infection.
When you walk into the actual procedure room (and the facility should let you see a treatment room, provided that it isn't in use), make sure the sheets are clean, and the implements used are either sterilized (which is usually done with UV light) or disposable [sources: Warfield, Meraglia].
Because there aren't any real guidelines governing the industry, use your own cleanliness standards as a guide. For example, during waxing, many estheticians will use a new stick every single time they dip into the wax. Others will only change the stick between treatments (you absolutely shouldn't get the stick that was used on the last person). Many estheticians wear gloves, which are important to help prevent the spread of infection, but some customers don't like the feel of gloves on their skin. Remember that the more stringent the cleanliness standards are, the less likely you're going to have a problem after your treatment.