Oust Tap and Showerhead Descaler is designed to restore good-as-new shine and performance. Especially formulated to remove limescale it is simple to use. Just apply straight from tube with the brush provided and leave to work for 10 minutes. The thick gels clings to limescale and gently removes it leaving your taps and showerheads clean and sparkling. Use regularly to maintain shiny looking taps and showerheads.