Brush Handle Length: 4.72 in. Bristle Type: Synthetic. Ingredient Callouts: This product is cruelty-free. What Else You Need to Know: The bronzer brush is a mix of two bristles. The white stippling bristles ensure an easy, streak-free application and natural finish. The smaller buffing brush contains soft, dense fibers that always pick up the right amount of product. It is slightly curved for easy control on application.