Nearly all skin care products are typically categorized as what?

Skin care products are often categorized as oil and water emulsions because many formulations are designed to combine these two primary ingredients. An emulsion is a mixture where oil and water are blended together with the help of emulsifiers to create a stable formulation. This allows for the effective delivery of active ingredients while providing moisture and hydration to the skin.

Most formulations, such as creams and lotions, utilize this emulsification process to achieve the desired texture and functionality. The combination of oil and water helps to create a product that can hydrate, protect, and nourish the skin, making it suitable for various skin types and concerns.

While other types of formulations do exist, such as pure oils and powder formulations, they represent a smaller portion of the skin care market. Simple solutions are too vague and don't accurately represent the complexity of most skin products. Hence, classifying nearly all skin care products as oil and water emulsions is the most accurate approach.