Abstract: The present disclosure provides a skin care formulation, which includes silver nanoparticles (AgNPs) and/or silver microparticles (AgMPs), vitamin E, glycerin, hyaluronic acid or a salt thereof, and water. The skin care formulation may be in a form of a serum. The present formulation may be used for treating a skin condition, such as aging, wrinkle, or pigmentation. The present formulation also may be used for moisturizing, rejuvenating, repairing, or improving aesthetic appearance of a skin of a subject in need thereof.