Physicochemical Properties of Gold Nanoparticles for Skin Care Creams
Cosmetic products with gold nanoparticles display enhanced anti-aging, moisturizing, and regenerative effects, which are mostly based on their sizes, shapes, surface charges, and dose of application. The use of nanoparticles as cosmetic additives raises questions about their safety, for which information is often obtained by testing them independently of the cosmetic product. As their physicochemical …