Olaplex 4-IN-1 Moisture Mask - 370ml In Store Only For all hair types, especially dry and damaged hair Olaplex 4-IN-1 Moisture Mask is a reparative mask that's formulated to address all clients in need of moisture, especially those with severe dryness and damage. Powered by OLAPLEX’s patented technology, this highly concentrated reparative mask adds intense moisture while providing shine and body to treat damaged hair.4-IN-1 Moisture Mask works quickly and efficiently to address dryness in even the most severe cases. Free of DEA, Aldehydes and Formaldehyde Use Apply 1-3 pumps to freshly washed hair. Work into fragile ends by detangling with your fingers. Comb through & let process for 10 minutes. Rinse thoroughly & style as desired.