Nº.4 Bond Maintenance Shampoo leaves hair nourished, strengthened and manageable with a creamy lather that nourishes, repairs and keeps hair healthy. Use with N°5 for softer, shinier, healthier looking hair with every wash.  Formulated without sulfates and suitable for coloured hair, this treatment works to reduce breakage, strengthen the hair fibre and restore vitality to damaged or dry hair.