4-IN-1 Moisture Mask is a highly concentrated, in-salon only reparative treatment that delivers intense moisture, shine & body to damaged hair Powered by Olaplex's patented Bond Building technology, it helps repair broken hair bonds and restore damage Professional-strength Ceramides, Oils & 11 vital Amino Acids provide a luxurious deep conditioning treatment in just 10 minutes Clinical results on damaged hair: 74% saw more moisture, 84% saw more shine, 84% saw more smoothness & 94% saw more body Intensely concentrated - Up to 100 uses per bottle.