adds four times the volume to your eyelashes. With its specially crafted brush, it separates them without causing any sticking and produces longer, more voluminous lashes. Mascara Perfect Lashes Ultra Volume X4 gives the thin lashes four times the volume they need to look thicker and longer. The lashes have four times more volume thanks to this specially formulated mascara. With its unique brush, it separates them without causing any sticking, covers the lashes from root to tip, and adds volume and length to the thin eyelashes.