3d brow building technique this new revolutionary 3d brow building technique allows to re construct eyebrows completely furthermore it is possible to create fullness and definition that cannot be achieved with regular eyebrow grooming the result is a waterproof and smudge proof eyebrow which is created by building on the natural shape to create fuller thicker luscious brows that have perfect definition and lasts for approx 2 3 weeks the achieved high definition result is 3 dimension