The F21 What you need to know: The F21 is a multi-purpose face brush from our Pro Deluxe Series. Handmade from extra soft, high quality anti-bacterial, easy to clean synthetic fibres, this brush is also vegan friendly. What it looks like: This brush is made from high quality fibres, a sleek silver ferrule and green handle. What its for: The F21s sloped fibres make this the perfect tool to apply foundation seamlessly and for buffing contour/blush/highlight on to the cheeks. This brush can be used with cream, liquid or powder products.