white stuff in rosewood fingerboard
about 10 years ago i did that big mistake: i polished frets with metal polish!
i placed a piece of tape on each side of the fret, to keep the wood from any damage, but it didn't work...
the metal polish penetrated down between the tape and the wood, and it flush-filled the wood grains throughout the board.
oh, it sucks!
any tips to get rid of it?