Yes, it is advisable to buff the wax between coats. The wax can be applied with a good quality brush and cotton cloth. The brush helps to push the wax into any corners or detailed aspects, the cotton cloth can be used to flatten down the wax to avoid any dry streaks or brush marks. A clean cotton cloth can be used to buff the wax in between coats and buffing the final coat. It usually takes three applications to create an even sheen. A shoe brush can also be useful for buffing flat surfaces along the grain of the wood.