The New CID Cosmetics i-define Lip Liner is soft enough to glide onto your lips to add definition and smooth enough to keep your lipstick in place for longer. A versatile shade, Nude is a pout perfector that will transform your look. Directions of use: To create shapely, defined lips and stop lip colour from moving, sketch around the lip line with i-define. To make lipsticks last longer, use i-define all over the lip area as a base before applying lipstick.