MAC Studio Fix Powder Plus Foundation is a one-step powder and foundation that gives skin a smooth, flawless, matte finish. Who it's for: MAC Studio Fix Powder Plus Foundation is suitable for anyone with any skin type who wants medium-to-full coverage and a matte finish. What it does: This powder wears for up to 12 hours and reduces the appearance of pores while controlling oil and shine. During those 12 hours it won't dry, fade, streak, cake, settle or crease, and it stays color-true. MAC Studio Fix Powder Plus Foundation is available in a wide range of shades.