ZAR Oil-Based Interior Wood Stain wipes on as easily as furniture polish to stain and seal in one quick, easy application. Formulated with “controlled penetrationâ€, this product helps ensure a uniform color tone without unsightly streaks or lap marks. It can be used on surfaces that have been previously painted or varnished, without stripping, to achieve a gorgeous wood grain effect. ZAR Oil-Based Interior Wood Stain can also be used on non-porous, non-wood surfaces for decorative faux finishing and color toning.