Ask when buying new furniture. If you know which finish is on your wood furniture, follow the appropriate procedures. Excessive dampness, dryness, heat, or cold can damage wood furniture.
Sunlight can change the color.
Rubber or plastic mats should not be used unless marked safe for wood, since some may soften or stain the finish. Wipe up spills at once to prevent spots that require refinishing. Polish not more than 3-4 times a year unless it gets heavy use, with a polish recommended for the kind of finish. Do not mix types of polish. Oil causes wax to become gummy.