There's an easy way to tell whether an old finish is going to need
Furniture Refinisher or Formby's®
Paint & Poly Remover.
1) Dampen a cotton ball with acetone-based nail polish remover.
2) Choose an inconspicuous test spot and dab it with the cotton.
If the cotton sticks or the finish softens, it's varnish, lacquer
or shellac. Use Formby's®
If there is no effect, it's a polyurethane finish. Use
Formby's® Paint & Poly Remover.