What it is: . A dual-ended beauty brush that seamlessly buffs and blends for a quick, even, natural finish.  . Brush Formulation: All Formulas. Brush Coverage: Sheer. Bristle Type: Synthetic. Ingredient Callouts: It is cruelty-free. What Else You Need to Know: The smaller fluffy brush contains soft, gently rounded fibers which are designed to lightly buff under the eye. The larger brush is crafted with the same fluffy synthetic fibers, allowing the brush to glide smoothly over your skin, both leaving a soft-focus and streak free finish. The handle is aluminum; the bristles are nylon. Size: One Size. Color: None. Gender: unisex. Age Group: adult.