The breakthrough lightweight waterproof formula creates beautiful defined lashes with a petite brush. This long-wearing mascara lasts up to 16 hours, yet the washable formula removes easily with warm water, thanks to an innovative thermal-sensitive technology. The unique slim-type brush reaches and grips even the tiniest hairs with an advanced lifting formula in a saturated blackest black color. This extreme defining composition enhances length, resulting in gorgeously distinguished out-to-there lashes. Key Claims & Benefits: sweat- and humidity-resistant ophthalmologist tested safe for contact lens wearers safe for sensitive eyes lightweight formula lifting defining flake-proof and smudge-proof How to Use: Press the brush into lashes close to roots and "shimmy" brush through from root to tip. Continue to build until fullest desired effect is achieved.