What it is: An endlessly buildable, clump-resistant mascara that stacks on infinite layers of volume and length.What it does: Stack on infinite layers of 24-hour volume and length with M∙A∙CStack Mascara. This endlessly buildable, clump- and flake-resistant formula gives you customizable volume from natural to next-level, along with instant length. Mirror your unique mood and reflect your individuality with two brush sizes tailored to your lashes and look. The M∙A∙CStack Mascara features the Superstack Mega Brush that’s ideal for longer or upper lashes, while M∙A∙CStack Micro Mascara features the Superstack Micro Brush that’s ideal for shorter or lower lashes. Magnify your eyes and enlarge your lashes with this major mascara must-have.Research results:In a consumer test on 111 women after using Superstack Mega Brush for one week:- 95% saw endlessly buildable volume- 95% saw gravity-defying volumeIn a consumer test on 110 women after using Superstack Micro Brush for one week:-95% achieved a custom natural-to-bold voluminous look*-95% said mascara was easy to build*How to use: Press the mascara brush into lashes close to roots and shimmy brush through from roots to tips. Keep stacking the clump-resistant formula for infinite volume potential.- Opthalmologist Tested; Appropriate for contact lens wearer 0.4 oz. Paraben-free; phthalate-free; sulfate-free; formaldehyde-free; hydroquinone-free; triclosan-free; mineral oil-free; petrolatum-free; Sodium lauryl sulfate-free, sodium laureth sulfate-free Winner of an <em>Allure '</em>Best of Beauty' Award, 2022 Made in Canada