PRODUCT DETAILS WHY YOU'LL LOVE IT Build 4 mm of measurable extensions! • Fiber-fix brush has 6 different contact points with each lash for optimal fiber placement • Breakthrough formula contains fibers up to 4 mm in length • Sealing formula stretches lashes and seals fibers to lashes • Washable, also available in waterproof formula FOR BEST RESULTS Extend lashes upward with Fiber-Fix brush, from root to tip. Only a few strokes necessary. For best results, do not let dry between coats. Removes easily with soap and water or Maybelline® Expert Eyes® 100% Oil-Free Eye Makeup Remover.