The Buffing Foundation Brush by e.l.f. Cosmetics is a versatile and affordable brush that Raaz highly recommends. In their video review, Raaz mentions that this brush can be used for foundation, cream, contour, and blush, making it a multi-purpose tool. They highlight how easily it blends out blush, providing a quick and easy application. The brush is described as very soft, giving a high-end feel despite its affordable price. Raaz emphasizes that you can do it all with just this one brush. Overall, the Buffing Foundation Brush by e.l.f. Cosmetics seems to be a great option for those looking for a versatile and budget-friendly brush.