Our showers are made mainly of epoxy-lacquered aluminium profiles and toughened safety glass. To clean these we recommend cleaners that contain surfactants and citric acid. As usual you should avoid any type of abrasive cleanser, which will easily scratch the surfaces. Stains can be removed with citric acid or tartaric acid, which should be rinsed off carefully afterwards. Limescale can be removed with household vinegar warmed to 50°C: rub it in, leave to soak, rinse off. Repeat if stains are stubborn. To clean a cast marble shower tray, see Cast marble and gelcoat surfaces.