M·A·C Studio Fix Powder Plus Foundation. Studio Fix is a powder and foundation in one that combines good coverage with ease of application. Designed to be used dry, the powder and pigments create a matte, velvety texture. It contains Silica, which helps to maintain a matte finish by absorbing oils on the skin, as well as Talc to provide a smoother, less reflective, matte finish. The talc has been milled to a microscopic size to provide a beautiful texture while allowing the skin to breathe. It is available in a wide range of colours. It can be applied with a brush, sponge, or a powder puff.