What it is: A synthetic-bristle foundation brush with a firm, slightly tapered flat head that provides medium-to-full coverage.What it does: Ideal for use with liquid and cream products, this brush is designed for smooth foundation application.How to use: Use to apply liquid or cream products such as foundation and primer. It can be used to apply primer, concealer, moisturizer and more. Style Name:Sigma Beauty F60 Foundation Brush. Style Number: 5038834. Available in stores.