What it is: A waterproof gel eyeliner that glides on for ultra-smooth, razor-sharp, killer lines that last for up to 36 hours.Ingredient Callouts: Free of parabens. It is also gluten-free and cruelty-free.What Else You Need to Know: This easy-to-use gel eyeliner glides on smoothly for easy application and doesn’t dry down rapidly, allowing playtime to smoke out the liner. Along with being long-wearing and waterproof, this eyeliner is transfer resistant and non-flaking.