Color Assure Shampoo - Nexxus Sulfate-Free Shampoo with ProteinFusion. Nexxus Color Assure Shampoo has been specially formulated to help extend the color vibrancy of color-treated hair. Using Nexxus' exclusive PROTEINFUSION blend, this sulfate-free shampoo cleanses color-treated hair and helps replenish nutrients.BenefitsCOLOR SHAMPOO AND CONDITIONER: For best results, use the Color Assure Sulfate Free Shampoo with the Nexxus Color Assure Long Lasting Vibrancy Conditioner.COLOR SAFE SHAMPOO: Infused with an exclusive PROTEINFUSION blend with Elastin Protein and Quinoa, this shampoo for colored hair helps bring your hair back to life.VIBRANT HAIR COLOR: Nexxus Color Assure Sulfate Free Shampoo cleanses color-treated hair and long-lasting vibrancy.SHAMPOO FOR COLOR TREATED HAIR: This color shampoo is safe for use on colored treated hair. Restore shine and enhance hair color for a vividly brighter look.LASTING COLOR HAIR PROTECTION: This color safe shampoo extends color vibrancy for up to 40 washes and is a great shampoo for colored treated hair.REAWAKEN COLORED HAIR: This sulfate free shampoo for color treated hair is also a silicone free shampoo and replenishes colored hair with nutrients lost during the coloration process. - Color Assure Shampoo