UNOPENED! 4-IN-1 Moisture Mask works quickly and efficiently to address dryness in even the most severe cases with professional-strength ceramides, oils, and 11 vital amino acids. Our ingredients and patented technology provide a luxurious, in-salon deep conditioning treatment, with or without a chemical service.   When tested on damaged hair, OLAPLEX 4-IN-1 provided:   74% More Moisture 84% More Shine 84% More Smoothness 94% Saw More Body