A double-ended wing stamp pen and accompanying liquid liner that make it super easy to get your best winged eyeliner. Ingredient Callouts: Free of parabens and phthalates. This product is also cruelty-free. What Else You Need to Know: This dual-sided wing stamp pen and felt-tip liquid liner helps create the perfect cat eye every time. This set is smudge-proof and waterproof, giving you all day wear from morning to night. For a flawless flick just stamp, line, repeat, and wink.