E.l.f. Intense H2O Proof Eyeliner is a waterproof liquid eyeliner pen that easily creates thin or thick lines with intense color. The quick-dry smudge proof liquid eyeliner formula instantly enhances the lash line with long lasting color. The felt tip pen applies color smoothly without smudging, feathering, or running for complete precision. Proud to be 100% vegan and cruelty-free, worldwide. Because kindness is chic.