Skincare products come in so many different forms, systems, and packages - different formulas allow for unique textures at every step of your routine, making each application an experience. Within these formulations, microscopic molecules play a significant role in not only feeling but also in perceived absorption and skin penetration. Emulsions like lotions and creams, for example, are made up of tiny structures known as micelles, which allow for a homogenous solution of two immiscible liquids, like water and oil; a water-in-oil (W/O) emulsion contains water and other polar ingredients in the inner phase (inside) of the micelle, which exists in an oil environment. Transversely, an oil-in-water (O/W) emulsion orients the micelle oppositely, such that oil is safely packed away from a water environment. W/O emulsions typically provide a refreshing break as you rub them into your skin, releasing water from the internal phase. In contrast, O/W emulsions usually offer an initial refreshing application followed by an emollient after feel, as mechanical rubbing breaks the micelle and releases oils.