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 to strengthen and repair all types of damaged hair. kit contains a 30ml deluxe sample of No.3 Hair Perfector. Scientifically Proven: 68% more repair, 3x stronger hair. When used as a two-part system in just one use.