What it is: The now iconic Dior Backstage Rosy Glow powder blush features pH-activating technology for a custom result that is buildable and longwearing. What Else You Need to Know: The Dior Backstage Rosy Glow blush offers buildable, custom, longwearing color thanks to a formula with pH-activating technology for an instant healthy glow that is longwearing and weightless. Available in 7 shades and 2 finishes.