I have recently completed a polished plaster ( marmorino white) wall and the client isn’t happy with it. I have used a spatula wax on the finish so there is good protection on it. Just wondering if anyone’s had to recoat a waxed wall before and what the process is. ( done the course and done 4-5 walls at home which turned out pretty good, this was the first paid job and the customer is not happy, bit if a nightmare tbh)