For the precision lining of eye area or body detailing/design. This brush has smooth, synthetic fibers of just the right length and density for lining the eyes. M•A•C professional brushes are hand-sculpted and assembled using the finest quality materials. They feature wood handles and nickel-plated brass ferrules. M.A.C does not test on animals. We do not own any animal testing facilities and we never ask others to test on animals for us. While some governments conduct animal testing to prove safety before they will allow us to sell our products, M.A.C has never tested on animals and we continue to be a leader in the movement to end animal testing globally. To this end, we are proud to partner with IIVS (Institute for In Vitro Sciences) to expand the use and acceptance of non-animal testing methods.