I used this polish, and followed directions precisely, for years.
I noticed a build-up which began to scratch easily.
Used the Bona Remover which does not work - especially as shown in their video.
Two days of scrubbing, repeat calls with Bona who said try again and change scrub pad, and I still have milky look and more spots that need additional scrubbing.
DO NOT USE this on a long-term basis!!