What it is: L'Oreal Professionnel Serie Expert Color Corrector Blondes What it does: Protect your blonde highlights from brassiness with the anti-yellow Vitamino Color A-OX Color Corrector Blondes Cream. Your blonde haircolor is corrected, any yellow highlights are neutralized, leaving a pure, cool blond. Hair is left smooth without a greasy finish. Use in place of your regular conditioner as desired. Rinse out.