Independent lab tests show FlexTexture is safe on the following surfaces: Acrylic, Aluminum, Car Exterior paint, Seasoned Cast Iron, Ceramic, Chrome, Copper, Crystal, Enamel, Fiberglass, Glass, Granite, Leather, Limestone, Marble, Non-stick Coatings, Oil Rubbed Bronze, Brass, Porcelain, Soapstone, Stainless Steel, Travertine, Vinyl, Wood, Quartz. If you have any concerns test in a small and inconspicuous area first.