L'Oréal Serie Expert Lumino Contrast Perfector 50ml [Leave-in Hair Treatment] L'Oréal Serie Expert Lumino Contrast Perfector is designed to maintain the beautiful color of hair that has been repeatedly colored, or has undergone design or multi-coloring. It's a "sealing repair oil" for colored hair that enhances the beauty of color-treated hair with a dazzling shine. Developed with the concept of making colored hair more beautiful, it contains L'Oréal's unique hair repair ingredient, "3D Luminous Care System." Through the action of oil components, it prevents the dryness characteristic of colored hair, provides a radiant shine and smoothness, and protects damaged hair from factors such as UV damage.