#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 N°0 Intensive Bond Building Hair Treatment (sold separately). Use N°0 asthma first step in a two-part-at-home system with N°3 Hair Perfector to strengthen and repair all types of damaged hair.