Seal liquid eyeliner for smudge-proof eye definition, or mix with eyeshadow to create waterproof designs. For cake eyeliner: Squeeze a few drops directly onto cake eyeliner. Roll brush (00 or 2 round, depending on desired line weight) to load with liquefied eyeliner. Apply. Eyeliner will set to smudge-proof finish when dry. To set eyeshadow: Squeeze a few drops onto a makeup palette. Apply over eyeshadow and let dry..5 oz dropper bottle.Ingredients: Deionized water, Proplyene Glycol, Polysorbate-80, Cellulose Gum, Imidazolidinyl Urea, Methylparaben.