Sport fx definition duo eyeliner pencil whether you want subtle definition or a graphic feline flick this versatile duo twist on pencil is the perfect tool for the job it delivers rich colour and excellent coverage plus it is easy to blend and you can create a flick up to 2 minutes after application the long lasting waterproof and smudge proof micro formula will stay in place for at least six hours and the tip is self sharpening so you never have to worry about a blunt end proud to