PRO TIP: Prime your hair for deeper repair with our professional-inspired No.0 Intensive Bond Building Hair Treatment (sold separately). Use No.0 as the first step in a two-part at-home system with No.3 Hair Perfector to strengthen and repair all types of damaged hair.
Where: Dampen hair and apply from roots to ends. When: Use once a week or two to three times a week for damaged hair. For: All hair types, especially for those with visible damage.