Our intensive weekly treatment deeply penetrates to help repair, seal and smooth even the most damaged hair. Using the power of pure plant oils and quinoa protein, it restores health, silkiness and shine. Part of a four-step restructuring system. Helps strengthen hair weakened by chemical processes, heat styling and environmental exposure. Quinoa protein penetrates the hair shaft, working from inside to help strengthen and repair. Phellodendron and barley seal in moisture. Castor, jojoba and meadowfoam seed oils smooth hair's surface.