Colloidal Silver is a solution of microscopic flakes of pure silver suspended in distilled water. Colloidal Silver is most commonly used topically to support skin health but it is also occasionally taken orally as an immune support supplement. Care should be taken if using Colloidal Silver orally as there are significant side effects associated with chronic oral use. If using Colloidal Silver orally we strongly recommend not exceeding the recommended dosage and to take at least 1 week off for every 2 weeks of usage.