Stila Smudge Stick Waterproof Eye Liner. Stila Smudge Stick Waterproof Eye Liner. Define those eyes with the best: Stila's Smudge Stick Waterproof Eyeliner. This moisturizing blend formula elevates the classic take on pencil liner with a smooth-gliding application and stay-all-day wear.. Black Amethyst - matte black purple. Waterproof to avoid smudging and running. Glides on without pulling or tugging. 0.01 oz. Use as a classic liner or smudge with brush or fingers for an eyeshadow effect. STIL-WU209. S467390001. Created in 1994 by a top celebrity makeup artist, Stila is known for its modern, sophisticated, non-intimidating approach to beauty. The brand's innovative, multi-tasking formulas, eco-friendly packaging, and fashion-forward colors have cemented its place on must-have lists of top beauty editors around the world.