The HG scale away foam spray produces a rich foam that allows for a longer working time, making it ideal for vertical surfaces such as walls and shower cubicles. It won't affect chrome, glaze, or grout. Simply spray the cleaner onto the surface, let it work, and then rinse off or wipe up with a damp cloth. This product is designed to remove limescale and is easy to use. It comes in a 500ml size.