The boundary breaking formula in the W3LL PEOPLE Expressionist Mascara creates big, bold fluffy lashes instantly and it nourishes thanks to a synergistic botanical blend. Hyper pure mineral pigments create the blackest of black for highly defined luxurious lashes. Their high tech brush design, with injection molded rubber and a unique cascade shape, precisely separates the thinnest, shortest, hard-to-reach lashes by expertly scooping up and lengthening each one, while delivering just the right amount of product. This wonder wand works for both tight lining and building. They know because it's been through rigorous professional testing.