A508-06 brush redefine the lips and apply lipstick flat bristle brush , small pointed. purobio cosmetics has created the brush n. 06 to outline the lips in a perfect and fill them so precise and flawless. the thin and elongated tip allows precision in defining the contours and fluidity in coloring the lips, the most controlled and simple application. how to use after use: after use: clean properly the brush with a mild detergent. for fluid products put a small quantity of product on the back of your hand to avoid waste and excess, dip the brush and apply.