- Look professional, feel luxurious. This stiff brush is key for applying fine lines of shadow or eye line with absolute control every time. Bring precision definition to the area around the eyes with this very short, flat, slightly stiff brush with a rounded head made of pony hair or naturon. Can be used for powder eye shadow as well as eyeliner. Goes well with Mystikol®. Please be aware that ingredient lists may change or vary from time to time. Please refer to the ingredient list on the product package you receive for the most up-to-date list of ingredients.