Try this DIY solution for giving your wood furniture a good natural polish.
For varnished wood, add a few drops of lemon essential oil into a 1/2 cup warm water. Mix well and spray on a soft cotton cloth. Cloth should only be slightly damp. Wipe furniture with the cloth, and finish by wiping once more using a dry soft cotton cloth.
For unvarnished wood, mix two tsps each of olive oil and lemon juice and apply a small amount to a soft cotton cloth. Wring the cloth to spread the mixture further into the material and apply to the furniture using wide strokes. This helps distribute the oil evenly.