Cake eyeliner is a water-based eyeliner that requires the use of a brush or sponge tip to apply. Unlike an eyeliner pencil, cake eyeliner is packaged as a pressed powder, resembling an eye shadow container.
The easiest way to apply cake eyeliner is with a damp brush or sponge tip applicator because this type of eyeliner is a powder, rather than a liquid. Depending on your personal preference, the intensity of this type of eyeliner can be easily adjusted during application. A major benefit of cake eyeliner is that it dries immediately, leaving behind a solid line that does not smudge.