Brass darkening solution is a perfect method to darkens new brass to give it a rich antique look. Brass darkening solution is fast acting and can be used to achieve an antiqued appearance on brass, copper, or bronze. Immerse the brass item in the solution, let is set until desired color is attained, then rinse with water and wipe dry. It causes no dimensional change. Choose from either 2 oz or 8 oz size.