The Clinique Quickliner for Eyes Intense Eyeliner is a popular product with mostly positive reviews. It is praised for its vivid, transfer-resistant color and is free of parabens, mineral oil, and fragrances. Some of its ingredients include Isododecane, Cyclopentasiloxane, Synthetic Wax, and Nylon-12. The eyeliner is known for its smooth application and long-lasting formula. However, some users have reported that it can be difficult to remove.