Special cleaners for limescale are not necessary. We recommend using BLANCO Antikalk or any acid-based cleaner (5 minutes). Afterwards, a deep clean should be done with BLANCO Aktiv or any liquid/gel laundry detergent. The sink should be rinsed thoroughly with water in order to fully remove the laundry detergent. These cleaning steps remove limescale and dirt, showing the sink original colour again.​ In order to avoid limescale, we recommend cleaning the sink regularly. Read more.