Always test an area first. Try a little acetone (finger nail polish remover) on a damp cloth and dab, dab, dab or use a small brush (as in tooth). Rubbing alcohol, used in the same manner, may also help.
Gently scrape away any excess polish with a knife or a blunt object then carefully apply a solution of luke warm water and mild soap until with a small sponge trying not to spread the polish after a few minutes wipe away with a clean cloth if the polish has hardened gently try rubbing a emery board
