Colloidal Silver Spray Colloidal Silver Discover STEM-C colloidal silver by Emme Diciotto, an exceptional product designed to offer an effective and natural antiseptic treatment. It is made from tiny silver particles suspended in purified water, creating a liquid colloidal silver solution. Why colloidal silver? A product known for its antibacterial, antifungal, and antiviral properties. Colloidal silver has been used for centuries for its therapeutic virtues. Made with high-quality silver particles, carefully selected for their purity and effectiveness. The product is presented in a convenient spray bottle, easy to use and carry. It can be sprayed directly on the affected area.