Adheres to a wide variety of substrates and quickly builds a tight seal that can be exposed to water in as little as 3 hours after application. Mold-free product protection helps keep the cured caulk mold- and mildew-free and looking clean for 5 years with regular cleaning. Typical uses: showers, tubs, sinks, tile, countertops and fixtures. Adheres to: most ceramic tile, laminate, porcelain, glass, metal, plastic, granite and wood. 100-percent silicone rubber.