I got this as part of a set and never used this size (the biggest size). It’s been sitting with my brushes so it has a little metal tarnishing from being left there but the brush area has not been used and is clean. The Artis Elite Oval 10, has a generously sized, rounded oval of fibres to provide coverage to a larger area of the face and body. This patented brush is superior for applying a setting powder to the entire face; or blending highlighting powders to the face or body. This brush can be used to apply powder foundation to the entire face in seconds. Or it can apply a shimmer effects product to other large areas of the body such as the shoulders or chest area. The Oval 10 has over 250,000 fibres. Artis brushes are made exclusively with CosmeFibre, a revolutionary engineered fibre made for applying cosmetic and makeup products.