Today's technicians are taught to practice infection control and the prevention of cross contamination. During a wax procedure this would include wearing gloves, disinfecting the area, remove the hair and then disinfect the skin again. Each step is an important link it preventing irritation or infection.
Any time your esthetician performs an exfoliation treatment; microdermabrasion, scrubs, galvanic, chemical peels, or ultrasonic, it can allow tiny portals in the skin to let bacteria in or out. The same is true for extraction. To protect both the client and the technician, gloves may be worn for the duration of the treatment. It is that extra step to protect you that is important to us, your professional estheticians. Even if there is no visible openings in the skin, we do not want to risk transmitting a microbe from ourselves or any other object in the treatment room onto a "potentially" open surface.
Some states now require all technicians to wear gloves for all treatments. They are taking a pro-active stance to prevent any possible problem. The good news? Today's gloves are thin, protective and have great tactile feel. You probably won't even know your esthetician is wearing them.
Most estheticians no longer use latex gloves, but if you have a latex allergy please do bring it to their attention. Today's gloves are generally vinyl or nytrile. They should be exam glove quality. In the future you can expect to see more nytrile gloves in use as they are much more environmentally friendly, even though the cost of use is still more than vinyl.