Experience total control with Too Faced Killer Liner 36 Hour Waterproof Gel Eyeliner. This precision waterproof gel eyeliner glides on for ultra-smooth, razor-sharp killer lines that last for 36 hours. How to Apply: Start at the inner corner of the eye placing eyeliner pencil as close as possible to the lash line. Glide Killer Liner across lash line for a precise line, or smudge for a smokier look. Do not use Killer Sapphire and Killer Queen on the waterline. Color: Killer Espresso.