A new and improved formula with an airtight locked cap makes the Clio waterproof pen liner unbeatable! No flaking, no smudging?this is liquid eyeliner revolutionized. The brush pen applicator tip allows for effortless dramatic winged eyeliner or barely-there, precise lines that will last all day and all night. And when you?re done? The Clio Waterproof Pen Liner is easy to remove with oil cleanser or makeup remover.