Product Details

• 40 WASHES OF COLOR VIBRANCY: System protects against color fade for up to 40 washes
• 3.3% CHROMABOND SEALER™ TECHNOLOGY: Helps maintain color depth, chromatic radiance, and tone
• LOCKS IN COLOR + INSTANT SHINE IN 1 USE: System seals cuticle to prevent color-stripping or fading; ensures long-lasting radiance and shine in one use
• REPAIRS COLOR-INDUCED DAMAGE + SMOOTH & SOFT FINISH: Color shampoo formula with citric acid strengthens bonds and smooths cuticle; system detangles and reduces frizz for smooth soft hair
• MOISTURE BOOST + IONIC SEALING COMPLEX: System adds hydration for softness and manageability; creates a hydrophobic layer to protect color molecules
• SULFATE-FREE SHAMPOO + CONSUMER-VALIDATED*: 0% Sulfates; 94% of consumers agree: System protects my colored/highlighted hair *Based on a Home Use Test with 114 consumers on 12/1/24

Massage into scalp, lather and rinse. Follow with COLOR ASSURE® Conditioner.

Hair is made up of protein. Every touch, every treatment, every style you love—it all rewrites your hair’s protein. When protein is damaged, hair’s look and feel is compromised. That’s why Nexxus uses protein science not just to repair hair but to restore its ability to perform. It isn't about one perfect hair day. It's about a lifetime of healthy hair, built strand by strand.

Hair color fading is tied to the integrity of your hair’s protein structure. Every exposure to physical, thermal, or chemical stress weakens keratin structures, making hair more vulnerable over time. Color treatments—like bleach, highlights, and dyes—with high pH can raise the cuticle and expose the inner cortex, leaving hair vulnerable to breakage and tonal irregularity. Over time, this damage compromises optical clarity and allows color molecules to diffuse when hair is exposed to water, accelerating fade. As a result, colored hair can appear dull, flat, and lifeless.

COLOR ASSURE®, our vibrancy and anti-fade collection, is powered by CHROMABOND SEALER™ technology with citric acid to lock color molecules inside the protein matrix and seal the cuticle barrier. This advanced shampoo for color treated hair and conditioner for colored hair combines citric acid bond strengtheners with ionic sealing technology to repair color-induced damage and create a smooth, reflective surface—so your color stays vibrant, multidimensional, and radiant for up to 40 washes.

Nexxus, the protein science behind powerful hair since 1979.

WATER (AQUA), SODIUM C14-16 OLEFIN SULFONATE, COCAMIDOPROPYL BETAINE, FRAGRANCE (PARFUM), GLYCERIN, SODIUM GLUCONATE, SODIUM CHLORIDE, CITRIC ACID, CARBOMER, SODIUM BENZOATE, ACRYLAMIDOPROPYLTRIMONIUM CHLORIDE/ACRYLAMIDE COPOLYMER, GUAR HYDROXYPROPYLTRIMONIUM CHLORIDE, PPG-7, POLYQUATERNIUM-10, DISODIUM EDTA, PEG-45M, BENZYL ALCOHOL, BENZYL SALICYLATE, CITRONELLOL, HEXYL CINNAMAL, LIMONENE, LINALOOL, BLUE 1 (CI 42090), RED 33 (CI 17200)

Product Page

Color Assure™ Sulfate-Free Shampoo

Protect and nourish your hair with our gentle, sulfate-free Color Assure shampoo for color treated hair. Infused with a conditioning polymer to help color treated hair, this shampoo helps colored hair retain vibrancy and richness for up to 40 washes.

Product Page

Our Color Safe Ingredient Blend

Using advanced protein science, Nexxus scientists identified the amino acids that make up the proteins lost most during the hair coloring process: Cysteine, Glutamic Acid, and Serine. With this discovery, our Color Assure ProteinFusion™ blend was specially formulated with Elastin Protein and Quinoa to replenish each strand and keep colored hair vibrant.

Product Page

See The Science

Keep color-treated hair vibrant for up to 40 washes.* Use as a system to enhance each strand’s richness, softness, and shine with our scientifically crafted formula.