Platinol oxidising liquid allows deep black or pale grey finishes to be achieved reliably on silver and copper. The colour is richer and finish is superior compared with liver of sulphur with far less sulphur smell. The finish appears immediately so the item can be rinsed and dried straight away. Apply directly using a brush or cotton wool or as a dip. For maximum product life, the bottle should be tgihtly closed and kept in a dark environment. Used product should not be returned to the bottle.