with Baking Soda & Essential Oil of Wintergreen Fluoride Free Desert Essence Pure Aromatic Tea Tree Oil comes from the bountiful outback of Australia. Distilled from the leaves of the Melaleuca Alternifolia tree, it leaves your mouth feeling clean and refreshed. Neem is an ayurvedic extract from the bark of the Neem Tree, which is known as the Âtoothbrush treeÂ in India where the twigs are used to clean the teeth daily. We have also added baking soda, which actively helps to fight plaque. Flavored with pure essential oil of Wintergreen for an ultra clean sensation. Free from harsh abrasives, synthetic sweeteners or artificial flavors.