Olaplex No.0 is the ultimate pre-shampoo powerhouse designed to repair and strengthen damaged hair from within. This intensive bond-building treatment penetrates deep into the hair shaft, repairing broken disulfide bonds caused by chemical, thermal, and mechanical damage. Just one application delivers visibly stronger, shinier, and more resilient hair. Perfect for color-treated, bleached, or compromised hair, this concentrated formula works in just 10 minutes to restore elasticity and reduce breakage. Experience salon-quality repair at home with Olaplex's patented bond-building technology—your hair's transformation starts here.