Colorado Esthetician Written Practice Exam

"Direct surface application" in the context of esthetic treatments refers to applying a product directly onto the skin without the use of a spatula. This technique allows for the product to be evenly distributed and absorbed by the skin. The other options are not considered direct surface applications in the same way; for example, using a brush to apply a product involves an intermediary tool, and using high-frequency treatment from a distance involves a different type of treatment altogether.