Our professional-inspired treatment primes your hair for deeper repair, rebuilds hair bonds, strengthens, and protects hair integrity. Use as the first step in a two-part at-home system with No.3 Hair Perfector (sold separately) to strengthen and repair all types of damaged hair. Scientifically Proven: 68% more repair & 3x stronger hair* *When used as a two-part system in just one use. APPLICATION TIP: N°0 bottle should last 3-6 applications, based on hair length and density.
MUST BE USED WITH No3.