Yes, the SofterWater T56 is designed to do exactly that.
The unit will greatly reduce hard limescale build-up in appliances, protecting them from damage and reducing power consumption.
However, it’s worth noting that it won’t remove soft residues like soap scum which can combine with minerals. Fortunately, those types of residues are simple to remove using a domestic cleaning product. The hard-to-remove carbonate limescale will be virtually eliminated.