They're Real! Xtreme Precision Waterproof Liquid Eyeliner - BENEFIT THEYRE REAL XTREME LINER BLACKFeaturesSpecially-designed 0.1mm tapered brush tip for XTREME precisionDraws thin AND thick lines for endless looksWaterproof, smudge-proof & longwearingFlake-freeFeels weightlessQuick-set formulaBuildable12-hour wear**Instrumental test on 20 participants97% said it applies with extreme precision**99% said it creates clean, crisp lines**98% said it glides on smoothly****self-evaluation by 111 participants after 1 week - They're Real! Xtreme Precision Waterproof Liquid Eyeliner