But that39s not all nano muc off will also leave an invisible protective 39nano layer39 which contains anti corrosion additives to guard against surface corrosion both during and after cleaning their nano tech formula will also leave a sparkling lustre on all surfaces which will reduce dirt adhesion what is nano nano deals with materials objects on the scale of a nanometre one billionth of a metre how small is a nanometre very small approximately 180000th of the diameter