Citric AcidAllergy:noEcozone Kettle & Iron Descaler works effectively to remove limescale from the inside of appliances that has built up over time. The solution is also odourless taste free and ensures that no residues are left behind. This eco multi-use formula comes with three sachets allowing for multiple uses. Just add a sachet of powder to boiled water in the kettle or dilute solution in a jug of boiled water allow to cool and filter/steam through your iron for scale free sparkling results. Cleans & descales appliances effectively removing limescale build-up Protects & maintains keeping appliances performing at their best Non-toxic odourless residue & taste free Allergy UK approved formula