Get thicker lashes with plenty of curl in just one stroke with butter LONDON Double Decker Lashes Mascara. Its creamy, lightweight formula holds your curls in place while its brush, designed with interlocking nylon fibers, grasps each individual lash.How to use: Position the wand horizontally at the base of your lashes and apply in a zigzag motion from root to tip to get every lash for full curl, length and definition. Reapply if desired. 0.41 oz. By butter LONDON; made in the USA.