This ADDITIVE is NOT for direct vaping, it is used to mentholate other liquids in the following approximate proportions. It is provided to allow individual customization based on your tastes.To produce the equivalent of our previous Light Menthol flavor option (the most popular by far), add one dropper full, approximately illustrated below, to a 15ml bottle or two dropper fulls to a 30ml. To have our equivalent to Full Menthol (like Cool Berry Mist), double the amount. A breakdown is listed below.