Rust-Oleum 1 qt. Biscuit Tub and Tile Refinishing Kit is a two-part epoxy acrylic designed to rejuvenate ceramic and porcelain surfaces like tubs, sinks and showers in just minutes. Specially formulated to provide excellent adhesion, durability and color retention in high moisture areas. It applies a smooth, porcelain-like finish that resists mildew growth for long-lasting protection and beauty. Color: Gloss Biscuit.