BetterYou Magnesium Joint Body Spray is available in a 100ml bottle. 2. It contains magnesium chloride and is designed to support joint health and flexibility. 3. The spray is applied topically to help soothe and relieve joint discomfort. Ingredients: Aqua (water), magnesium chloride, PEG-40 hydrogenated castor oil, acetyl glucosamine, propylene glycol, menthol, eucalyptus globulusleaf oil, limonene.