No but they are putting a brush into a pot, then onto someones greasy face and then back into the pots again. (not saying that everyone has greasy faces,) :nod:
When I did my VERY limited training we where taught to use a spatula and put what ever we where using onto pallet, a bit like artists use to stop cross contamination. This was not the most cost effective method but by far the most hygienic.
We had to use a clean pallet and set of brushes with every client.
They where always well washed and sanitised after every use.