Ingredients in cosmetic products that function to let the products spread more easily are also known as?

The correct answer refers to ingredients in cosmetic products that enhance the ability of the product to spread easily on the skin. Surfactants are compounds that lower the surface tension between two substances, such as oil and water, which is why they are commonly used to improve the spreadability of cosmetic formulations. They help to create an even application and can enhance the texture and feel of a product on the skin.

In contrast, emulsifiers are specifically used to stabilize mixtures of oil and water, ensuring that the two do not separate. While they also aid in product application, their primary role is different from that of surfactants. Preservatives are added to prevent microbial growth and extend the shelf life of products, while thickeners are used to alter the viscosity of a formulation, making products thicker but not specifically impacting their spreadability. Understanding the roles of these various ingredients is crucial for formulating effective skincare and cosmetic products.