This Bar Keepers Friend Cleanser and Polish is the premium household powdered cleanser with a non-bleach formula. BKF is recommended for cleaning stainless steel cookware and sinks, glass and ceramic cook-tops, solid surface countertops, porcelain and acrylic bathtubs and more. It’s a perfect cleaner for removing rust, tarnish, hard water stains and lime scale.425 grams. Anti-bacterial. Powdered cleanser. Non-abrasive, bleach-free formula. Perfect for rust, tarnish, hard water stains and lime scale.