If you have old traditional varnish that has aged and turned very dark, I have an easy method for restoring.

Combine equal parts turpentine and raw linseed oil. Dip in a 1-0 steel wool pad. Rub lightly than wipe with a cotton cloth.This will clean lighten and restore your woodwork in one easy step. For a free estimate, contact me in the Cincinnati area at 513-531-7380.