#1 Product in Prestige Haircare*
A weekly at-home treatment, not a conditioner, that reduces breakage and visibly strengthens hair, improving its look and feel.
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.
68% more repair & 3x stronger hair*
*When used as a two-part system in just one use.
PH Balance: 3.5-5
A highly-nourishing and reparative shampoo.
N°4 Shampoo repairs and protects hair from everyday stresses — including damaged hair, split ends, and frizz — by re-linking broken bonds. Leaves hair easier to manage, shinier and healthier with each use. N°4 is color-safe and proven to reduce breakage and strengthen all types of hair.
A highly-moisturizing, reparative conditioner for all hair types.
Leaves hair easier to manage, shinier and healthier with each use. Protects and repairs damaged hair, split ends, and frizz by re-linking broken bonds. It is color-safe and will strengthen and leave your hair stronger than ever.