Antibacterial and Antimicrobial Silver has natural antibacterial properties. It's been used historically to prevent bacterial growth in wounds and water storage. Some people use colloidal silver topically on minor wounds, burns, or infections. Immune Support (Anecdotal) Some users believe colloidal silver helps boost immunity or fight off colds, flu, or sinus infections. However, this is not supported by clinical trials. Topical Use for Skin Conditions Applied externally, colloidal silver is used by some to calm skin issues like acne, eczema, and fungal infections. Sinus Health A diluted solution may be used in nasal sprays or neti pots to manage sinus infections due to its antibacterial properties. Eye and Ear Infections (Traditional Use) Historically used for pink eye (conjunctivitis) and ear infections, though safer, modern treatments are preferred today. Use before and after "oral encounters." Do no use often. No more than 7 days in a row. Silver can interfere with the body’s absorption of certain antibiotics and thyroid medications.