A colloidal silver serum is a liquid solution containing silver particles at the nanoscale, often in an aqueous base or a skin serum formula. This product is typically used for cosmetic or skincare purposes.

It is often claimed that colloidal silver serum has antibacterial, antiviral, and antifungal properties, making it a popular choice for treating acne, skin infections, and other skin conditions. Some users also report benefits such as clearer skin, reduced redness, and overall improvement in skin appearance.

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