A deeply cleansing yet gentle and color-safe clarifying shampoo that removes heavy metals, hard water minerals, chlorine, pollutants, product buildup, and excess oil that can cause dull, discolored hair. No.4C helps revive soft, vibrant hair without leaving it dry. Use it weekly or as needed to hit the reset button on healthy-looking hair. TEST RESULTS Results With One Use *Results achieved by cleansing with N°.4C Bond Maintenance Clarifying Shampoo, conditioning with N°.5 Bond Maintenance Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling. *Results achieved by cleansing with N°.4C Bond Maintenance Clarifying Shampoo, conditioning with N°.8 Bond Intense Moisture Mask, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling. USAGE RESTRICTIONS Avoid contact with eyes.