Clean the shower cubicle: If limescale cleaners fail, a dab of toothpaste will help. Vinegar works wonders on calcified shower cubicles.
Mold tends to form on the silicone joints and in the corners of the shower. Rinse aid prevents water stains in the shower and ensures crystal clear glasses in the dishwasher. The household remedy vinegar also helps against mold, but according to Ökotest.de it is “unsuitable for natural stone tiles, silicone joints or tile joints”