All-purpose for blush or face powder. This brush is particularly good for blush application. The fibres are soft and form a full, rounded shape. MAC professional brushes are hand-sculpted and assembled using the finest quality materials. Our 100% synthetic brushes incorporate the latest innovations in fibre technology for superior performance and improved longevity. Animal Testing. MAC is working toward a cruelty-free world. MAC does not test on animals and never asks others to test on the