For actual moment, barber is least fun job avaliable (we don't count assistant here, assistants don't do job) because its very rare to get someone willing to have hairjob, i tough of change in this job, Instead of "Barber" or "Hair Stylist" just change it to "Stylist" so its not *binded* to hairs exclusively.
Stylist have access to more tools, machines and any sort of stuff, for example, stylist can make masks, clothes, costumes, hairs, makeups and even more, it would allow for person playing this job have more stuff to do, but it require making more than just hairs and even in future allow create new cover for lesser robots like cleaning, healing or even beepsky (for example making roomba cover from metal sheet or paper as stylist for cleaning bot, so it will look like roomba after robotics equip it on robot).
In short this job would offer virety of choices and would be very interesting place to obtain items like clothes for specific jobs, or funny looking costume of werewolf or other creatures, potential there is kinda limitless.