Way back, I mean like 1975 we had recycle pots. The posting that talked about the client getting herpes from double dipping? Wrong, they already carried the herpes virus and had a herpes outbreak from the service not the wax.
In the states there are places that say no double dipping and other places where the defination is still grey. Still no-one talks about the double dipping of nail polish!
I think we need to get truly educated about where bacteria will indeed grow, and how things are transmited. Wax and nail polish both do not have a shelf life nor do they have preservatives. Oxygen and water are both components that promote the growth of bacteria, neither of which exist in wax and polish. Plus neither the wax spatula nor the nail polish brush touches the skin.
As I continue to say, work how you feel comfortable. We professionals are more exposed than our clients so we need to protect ourselves first. Keep your station and room spotlessly clean, but think things through before believing them. I can't stand it when a doctor makes a statement and everyone lays down and believes it. Get educated, require proof and wax on! final words? we would have all been dead had things been so easy to transmit.