What it is: An extreme-precision liquid liner, now with optimized ink flow and transfer-proof long wear in a luxe aluminum pen. Ingredient Callouts: Free of parabens. It is also vegan, gluten-free, and cruelty-free. What Else You Need to Know: This waterproof, transfer-proof, long-wearing liquid liner is bolder and smoother with better ink flow. The formula stays inky without bleeding, skipping, or drying up. 0.01mm Extreme Precision has the same iconic needle-precise brush tip for fine linework, lash-line fills, and more. The bold pigment locks in place for fade- and smudge-resistant wear all day. Clinical Results: In a consumer study of 30 volunteers: -100% agree the brush tip easily fills the spaces between each lash for solid coverage -97% agree the brush tip makes it easy to control the thickness of their lines -94% agree this eyeliner has intense pigment payoff