Bar Keepers Friends Multi Surface Cleaner & Stain Remover 250g

Bar Keepers Friend 250g Stain Remover.
Bar Keepers Friend is a premium powder-based household cleanser that can be used throughout the house.
It contains a non-bleach formula and may be used to clean stainless steel cookware, sinks, glass and ceramic hobs, kitchen countertops, and porcelain and acrylic baths.

It also effectively removes rust, tarnishing, water stains, and lime scale.
Oxalic acid is the "secret" ingredient in BKF's cleaning capability. The original composition, discovered by coincidence in 1882 by a chemist who observed his pot was cleaner after cooking rhubarb, continues to outperform many modern cleaning products.