e.l.f. Beautifully Precise Swirl Foundation Brush. l.f. Cosmetics Beautifully Precise Swirl Foundation Brush has a fluid reservoir to swirl and blend liquid foundation smoothly onto the skin. The custom-designed triangular handle provides ultimate control while the cruelty-free fiber hairs apply the optimal amount of product use for precise and even application. Proud to be cruelty-free and vegan. Our brushes are synthetic, vegan, and cruelty-free.