Tried to repair a large bathroom mirror attacked by green sponge stripes. Despite a lot of passages (there must be at least 5 or 6 for a result of the beginning), only the most superficial scratches have been mitigated, the result was therefore way for me (but not negative). In fact this is just an abrasive micro repolit that the glass surface, we must insist before a result and it's not super handy with a drill, it heats much more the product splashing around, plan well protect before. One tip if you run out of product, can be replaced with white toothpaste (abrasive)
