What it is: A waterproof, fade-proof, and smudge-proof liquid eyeliner pen with a flexible brush tip for an effortless application, maximum control, and precision.Ingredient Callouts: Free of parabens. It is also cruelty-free. What Else You Need to Know: This formula is long-wearing, waterproof, and will never fade or smudge. This eyeliner smoothly glides onto lids without skipping, tugging, or pulling for the perfect line each time. For best payoff, shake eyeliner well before applying with brush tip facing downward, and store flat after use.Clinical Results: In a consumer test, people agreed that this formula is easier to use and offers better precision than the leading competitor (black shade only):- 100% of users agreed this formula is intense black and buildable- 97% of users agreed this formula is waterproof, long-wearing, and does not fade