Use what professionals use to speed up drying when they need to apply several coats on the same a day - Klean-Strip Japan Drier. Its special blend of lead-free drying agents accelerates the drying ability of oil-based paint, oil-based enamels, varnish and polyurethane. It is especially effective in highly humid or cool weather conditions. Though Klean-Strip Japan Drier appears purple, it will not affect the color of your coating.
Easy to use
Superior strength use in small quantities
Not for use with latex paint, water-based finishes, lacquer, 2-component urethanes, epoxy paint or other synthetic finishes