Blue Corrector works to counteract blue undertone flaws in facial complexions. Primarily used under eyes for dark under eye circles or on dark beard shadows for men. Also works terrific for covering bruising from injectables or surgery. For a truly lighter area, the undertones must be corrected first. We use the colour theory principle of orange counteracting blue, so the actual colour of Blue Corrector is orange. Again, it’s to correct the blue. Apply sparingly first to clean skin with Correct & Conceal brush under eyes or Cover It brush on beard shadow. ALWAYS follow second with HD Stic Concealer directly on top of Blue Corrector or Airbrush Makeup. A MUST have for TV personalities and dark circles!