Skin care facial serum is a type of skincare product that is designed to deliver high concentrations of active ingredients directly to the skin. It is typically formulated with smaller molecules that can penetrate deeply into the skin, allowing for more effective delivery of nutrients and hydration. Facial serums may contain a variety of active ingredients, including vitamins, antioxidants, and peptides, which can help to target specific skin concerns such as fine lines, wrinkles, uneven skin tone, and hyperpigmentation.