Gel eyeliner is a type of cosmetic product used to define and enhance the eyes. It is a creamy, smudge-proof formula that comes in a gel consistency and is applied using a brush or an applicator. Full definition
I have lined my eyes with brown gel eyeliner and a hint of gold eye shadow. (notonlymakeup.net)
Next, use gel eyeliner to create a defined line that starts out thin on the inner corner of your eye and ends thick and wing - tipped on the outer edge. (stylecraze.com)
Now trace the pencil lines with gel eyeliner for defined lines. (stylecraze.com)