A double-ended eyeliner that creates well-defined eyes with a color on one side and black on the other | The perfect eyeliner for going from day to night with just a flip of the pencil | N. Y. C. New York Color Eyeliner Duet is the perfect eyeliner for going from day to night with just a flip of the pencil. | N. Y. C. New York Color eyeliners give the perfect point for every modern, sexy look. | Long-wearing, smudge-proof formula. Fragrance-free.