Transdermal magnesium with a gemstone roller ball. Magnesium oil with large rose quartz ball, 30 ml (1 fl oz) for clean cool relaxing spa like application in a clear glass roller bottle. The bottle can be refilled after use. Ingredients: water, Genuine Zechstein magnesium chloride 100 mg of elemental magnesium per 1 ml Apply to clean skin. Rinse or wipe off with a damp cloth after 20 minutes if desired. Initial tingling can be experienced. Patch test first and discontinue use if irritation occurs. External use only. Avoid contact with eyes, mucous membranes, cuts, wounds, freshly shaven skin. For 250 million years Genuine Zechstein magnesium salt has been protected at 1600-200 meters deep in the interior of the earth, as part of the Ancient Zechstein Seabed in Europe, kept pure and untouched. Excellent to apply on your skin while keeping your hands clean. The large rose quartz roller ball makes it easy to cover a large area quickly in a spa like fashion.