The K18 Damage Control Duo Set is a reparative haircare kit featuring two leave-in molecular repair products. This duo includes a full-size Leave-In Molecular Repair Hair Mask to deeply hydrate and repair damaged hair, plus a travel-size Molecular Repair Hair Oil to add shine and smoothness. Together, they help to restore hair to its original, healthy state. Perfect for all hair types experiencing damage from chemical treatments, heat styling, or environmental stressors.