Our all-natural bath salts feature a custom blend of therapeutic salts, pure essential oils, and other skin-loving ingredients. Free of preservatives, additives, or synthetics. Of the Sea: Magnesium sulfate (Epsom Salt), Sodium chloride (Sea Salt), Sodium bicarbonate (Baking Soda), Tapioca Starch, Eucalyptus globulus (Eucalyptus) Leaf Oil, Lavandula angustifolia (Lavender) Flower Oil, Mentha arvensis (Peppermint) Leaf Oil 15 oz.