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All fine wood products need moisture and in the dry climate of a home or business will become dried out and may crack. To prevent or reduce the chance of damage it is best to polish wood items at least once a month with a high quality wood polish. Spray on polishes are not effective as they are used mostly for removing dust from finished wood and do not add adequate moisture. Africans will often use matching shoe polish, which not only adds moisture but sheen to woods such as ebony or mahogany.
Rub the polish in using a clean cloth or shoe brush then buff with a clean soft cloth.