These all natural and fragrance-free bath crystals soothe dry and itchy skin while they promote healing. They contain natural magnesium and sodium salts, together with an emollient; this combination of mineral salts has been shown in research to decrease itching and aid in cell regeneration. Add Dakota Free Bath Crystals to your bath water, relax and enjoy their spa-like qualities as they pamper your skin. The Bath Crystal Refill comes packaged in a reseal-able plastic bag that will refill one empty 6 oz. Dakota Free Bath Crystals jar. Ingredients: Magnesium salts, pacific ocean sodium salts, corn starch, vegetable glycerin.