Stack on infinite layers of volume + length with MACStack Mascara now in an on-the-go size! This never-before-seen endlessly buildable, clump-resistant formula gives you customizable volume from natural to next-level, along with instant length. Mirror your unique mood and reflect your individuality with the Superstack Mega Brush that’s ideal for longer or upper lashes. Magnify your eyes and enlarge your lashes with this major mascara must-have!