Tooth Soap leaves teeth ready to re-mineralize from nutrients in your diet and is packed in natural amber glass jars to keep all light from damaging the sensitive essential oils. Tooth Soap tastes best if used within 3 months of opening the jar. All batches of soap are made small to ensure you are getting a fresh product. One jar lasts 2-3 months. Use Tooth Soap to cleanse and whiten teeth and support healthy gums.