Enjoy flawlessly clean lines as precise as .4 mm with L'Oréal's The Super Slim by Infallible Never Fail. The ultra-fine felt tip gives you total control, delivering the perfect amount of liner. The intense quick dry 12 hour formula glides on smoothly with continuous and even flow. In one stroke create sleek and sophisticated eyes. Skip-proof. Drag-proof. Smudge-proof. Ophthalmologist-tested.