I have an old time description of the properties of wax: (Just talking wax here, NOT composite finishes that are part wax.) Wax is described as a substance that sticks very well to just about everything, but not at all to itself. It is true. You cannot "build up" a wax finish. On plastics, for example, you can put a single full coat on and buff. Then you are done. If you put another coat on and buff, it will not stick to itself and when you buff, you will be back down to the single thickness you had with the first coat...and NO MORE. With bare wood, it is slightly different as you need to saturate the wood to achieve a complete coat, and that can take repeat applications to get your first complete coat. But once there, you are done. Again you cannot build a second complete coat because it will just buff off down to the first complete coat, a few molecules thick (because wax does not stick to itself). So if you want a "build" type finish there needs to be some other (additional) component to your finish besides wax. The wax finish does wear off fairly easy, it is a thin coat and soft. So you can restore it easily with a new coat, but it can and will only be brought back to the initial single thickness.