Maybelline Unstoppable Waterproof Eyeliner Onyx Achieve a stylish look with the Maybelline Unstoppable Mechanical Eyeliner Onyx 2 Pack. Long lasting and smudge-resistant it is suitable for all-day wear. The swivel point never needs sharpening and glides smoothly for precise application and eye definition. Ophthalmologist tested the formula is safe for both contact lens wearers and those with sensitive eyes. This mechanical eyeliner comes in a 2-count package (0.01 oz).