Products used to repair wood finishes differ based on what damage has been done to the furniture. Scratch cover or touch-up markers can be used to hide any scratches.
Most furniture is used daily. This results in chips, scratches, dents and other problems. Water rings, for example, can be removed by wiping the furniture with denatured alcohol. Clear nail polish can be used to fill in any chips, although the piece will need to be sanded afterwards. Touch up marker can hide the appearance of big scratches and wear around the edges. Keeping the furniture wiped down with a cloth can help prevent any future damage.