Clean the bronze statue with a little soap in a slightly damp cloth. Be careful to never over-wet the sculpture as this can cause damage to its finish. If the sculpture has crevices that are difficult to reach, lightly brush away grime with a soft toothbrush. Rinse the soap off of the sculpture with clear water.
Use a clean paintbrush to cover the bronze statue with wax after the sculpture has dried. Place wax in all of the crevices and wrinkles of the piece. Try to use a clear wax so that it will not change the appearance of your statue. Only use carnauba waxes because they provide a tougher finish that will protect your sculpture from rust longer.
Melt the wax with a hairdryer. This should only take a few minutes and will allow the wax to penetrate the deep crevices of the sculpture where it is more prone to rusting and oxidation.
Rub down the entire statue with a soft, clean cloth once the melted wax is dry. You can also use a soft, clean toothbrush to carefully rub any crevices.