What it is: This 2-in-1 dual-ended liner and shadow easily define and enhance eyes with creamy, effortless application that lasts all day.Who it's for: Ideal for all skin types; safe for sensitive skin.What it does: Flip Side Liner & Shadow Duo is the new go-to glam. Six curated pairs serve limitless looks with an easy-to-use, precision micro-sponge shadow on one end and a creamy waterline-safe pencil liner on the other. Plus, a waterproof and primer-infused formula that lasts all day long. How to use: Apply the eyeliner tip along the lash line. Twist open the built-in eyeshadow and apply sponge tip directly to eye lids. To reload, twist the sponge tip back into the component, and twist back open to reveal refresh sponge tip with eyeshadow formula. Dermatologist tested Ophthalmologist tested