HG grout cleaner is a powerful and "buffered" cleaner. Due to these properties, it remains active at the same powerful level during the application time and (after) brushing, which will give great results. This product can be used on almost all joints between wall tiles, floor tiles and bricks. HG grout cleaner is also available in a concentrate variant. If yellow or brown dirt remains after cleaning, this is limescale - this can be removed with HG professional limescale remover. For black out grouting in the bathroom, we recommend HG mould cleaner.