Ultra Epsom® Salt is the highest quality, USP grade Epsom salt available. Exclusively from SaltWorks, the Ultra Epsom brand of magnesium sulfate is known for its exceptional therapeutic value and purity. Ultra Epsom Coarse grain is a large grain crystal, similar to a grain of rice, and works perfectly for using to soak in the tub. We leave this unscented, and know that some customers like to add a couple of drops of the essential oil of their choice to their salts in the bath. We offer this item bulk by the oz in the shop, and online 16 oz in our deposit jar ($2 deposit included) or 32 oz in a paper bag with biodegradable liner.