Our directions do say 2-3 drops of the Serum. It can be "rounded drops" it doesn't have to be exactly 2-3 drops. This just serves to mean a very light application that should just barely cover the face without leaving it excessively wet or damp.
You can put 2-3 drops in the palm of your hand and add 2-3 drops water - Dilute 50% with water.
Or you can use it straight and just put enough on so that it just barely covers the area.
You can use any additional product (aqueous cream, J&J oil, etc) that you would like. Applying a moisturizer on top may push down more of the copper-peptides.