skysight-inc/HackerNews huggingface dataset:
>Wait, what diseases?

http://www.tpub.com/content/armymedical/MD0164/MD01640044.ht...

http://www.sanitarian.com/14_American_Jails___Barbering_and_...

Here in Washington state you do need a food handlers license just to wash dishes in a restaurant. It's not especially onerous, something like $15 to take a fairly simple test. (And even for the lowest-wage employees I imagine most Restaurants will eat the cost of licensing without complaint.)

And I think it's the general assumption that you don't need to worry about disease in a salon that merits the higher barrier of entry to getting a license than a Janitor, where everyone knows that if there's a bunch of human-sourced fluid on the ground, you need to be careful.
The answers completely missed anything Minecraft.