This quick-drying topical spray is formulated with Magnesium, often used to help with muscle stress and tension. Prized for its purity, Natio’s Focus On Magnesium spray is formulated with superior Genuine Zechstein Magnesium from the ancient Northern European Zechstein Seabed, from deposits deep under the earth’s surface and protected from the environment for centuries. Part of Natio’s Home Happiness range.