Did not work for us at all
We have a reddish bloom on the marble seat in our shower. We tried every solution we could find online and nothing worked.  Finally we called a marble installer / re-finisher and they recommended this product. Followed the instructions exactly and let it dry completely - gave it 2 days even. It is easy to apply, but a bit more difficult to remove - you need a good stiff brush (but one that won't scratch the marble) and a fair bit of effort. Unfortunately, it did not make any improvement at all.
Rating: 1 stars