Transcutaneous magnesium oil has been developed for stress, concentration, fatigue, pain, cramps, joints, heavy legs, sleep, sports activities, among other uses. The product has a certificate of origin (Holland) that assures purity and ecological extraction. In addition, it uses noble glass to limit plastic pollution. The scientific name of pure magnesium chloride in a natural state is bischofite. The higher the quality of the bischofite (its concentration of pure magnesium chloride), the higher the purity of the magnesium oil. Storage recommendations: At room temperature.