What causes glassware discoloration and etching in dishwashers?
Because there are other dishwasher glassware problems that are similar, it is important to confirm the particular problem(s) that you are trying to fix. There are probably two answers in reference to this question. If the glassware has a rainbow-like or yellow coloration it may have what is called a silica film. Some glassware is more resistant to this condition than others. These colors follow existing stress lines in the glass and cannot be removed by acid or bleach but can but can be scraped off with a shape knife.
