Calgon prevents limescale build-up in your washing machine to protect the heating element, pipes and drum of the machine. It is completely safe for all fabrics and colours. This has Calgon's leading formulation with active ingredients; polycarboxylates to soften hard water, preventing limescale from forming in the first place. Calgon is not a descaler, but purely a preventative measure - meaning the sooner you introduce Calgon into your daily wash routine, the better! Use this to neutralise limescale, prevent dirt residue and odours leaving your washing machine healthy and your clothes protected. Features and Benefits Preventative - Neutralises and prevents limescale from forming in the first place. Get rid of bad smells - Helps eliminate residue and prevents the source of malodours. Efficient - You will have cleaner laundry in every wash and it's safe for use on all types of fabrics. Specialised - This protects all vital parts of your washing machine. Specifications Volume: 500g I