It is interesting that people view spa therapies as something casual and unprofessional, but a huge amount of spa equipment and spa treatment is quite technical and requires a bit of advanced knowledge. In fact, what many people used to think of as unofficial work now requires licensing in many areas. The woman doing your "mani-pedi" or the man giving you a massage will probably have to have a license to perform these tasks!
These people tend to also need quite professional gear too. For instance, if you explore almost any health site you will see the more familiar spa equipment that includes massage tables, manicure and pedicure supplies, waxing supplies and such. You will also see spa equipment for the treatment of athletes, for people with diabetes, and even for people who have had esthetic treatments done by professional surgeons.
Clearly, this means that heading to the spa is never the same as popping into the beauty parlor for a quick blow dry and style. Instead, it is actually quite possible to begin looking at your spa therapies and the spa equipment used for them as much more significant and "official".
If you still disagree with this idea, we suggest you visit a website offering all types of spa supplies. This is a place that will show you the tremendous diversity of materials that are put to use, and the seriousness with which the people in the industry take their jobs.
For example, consider the shift in trends where massage equipment is concerned. Up until only a few years ago, it was typical to see only a massage table as the standard type of equipment put to use. Then it got a bit more advanced and there were portable tables for people doing at-home or mobile massage treatments. Now, the medical industry has recognized that some people benefit far more from seated positions during massage sessions and this is why so many kinds of massage chairs are available.
You can see this sort of progression in nearly any service offered by spas of all kinds. Another of the primary areas in which this is seen is in esthetic treatments. It is not unusual for a spa to have equipment that looks like it came directly from a physician's offices, and this means that someone enjoying treatments can now that the person doing them is also utilizing the best and most modern tools of their trade!