This is definitely a favorite among those who know what they want. Liquid eyeliner offers bold, striking looks, and simple application thanks to modern pen form-factors. Here are a few tips for using liquid eyeliners: 1.) Don’t be intimidated! Old school liquid eyeliners often required an expert touch. These days, however, they come in a wide variety of tips that make application as easy as using a regular everyday sharpie. 2.) Tight lines. Liquid eyeliner gives very bold, strong liners, making it the perfect type of eyeliner for very tight lines, which can be used to make a subtle nude look pop if you keep it close to your eyes. 3.) Bolder is easier. Most people don’t use liquid eyeliner for subtle lines though. No other type of eyeliner makes the coveted cat eye look easier. It makes the dramatic Cleopatra-look pretty easy to pull off too.