Nexxus Intense Bonding Treatment leave-in amino & keratin 5 oz — rebuilds broken bonds for stronger, damage-resistant hair

Nexxus Intense Bonding Treatment restores and reinforces weakened hair by rebuilding broken protein bonds with a concentrated amino-acid and keratin formula.

This leave-in rebonding serum is part of the Nexxus Amino Bond system, formulated to repair multiple types of damage fast. Using a ProteinFusion blend of five key amino acids and keratin protein, the treatment penetrates into the hair fiber to rebuild internal bonds, seal in moisture, and improve resilience. It’s designed for use after the Amino Bond shampoo and conditioner and works in minutes to help hair feel stronger and more damage-resistant.

How quickly will I notice stronger hair after using this treatment?

Most users report improved feel and manageability after a single application, with visible strengthening continuing after repeated use. The concentrated formula targets broken bonds at the hair core, so effects accumulate as the treatment rebuilds internal structure.

• Works in minutes when applied to clean, damp hair and left in
• Formulated to address up to five types of hair damage
• Delivers concentrated amino acids and keratin to the fiber’s interior

What types of damage does Amino Bond repair?

This treatment focuses on structural damage caused by chemical services, heat styling, mechanical stress, and environmental wear. By replenishing lost amino acids and reinforcing keratin bonds, it improves strength, elasticity, shine, and moisture retention without weighing hair down.

• Rebuilds breakage from chemical processing and colouring
• Repairs heat and styling-related weakening of the hair shaft
• Restores elasticity and reduces future breakage risk

How do I use the Intense Bonding Treatment for best results?

For optimal outcome follow the three-step routine: cleanse with Amino Bond shampoo, condition with the matching conditioner, then apply this treatment to damp hair. Distribute evenly, do not rinse out, and style as usual to allow bond-building actives to work continuously.

• Begin with the full Amino Bond shampoo + conditioner system
• Apply a small amount to clean, towel-damp hair and comb through
• Leave in—no rinsing—then air-dry or style with heat protection

Is this treatment suitable for all hair types and textures?

Yes. The formula is created to benefit a wide range of hair textures and porosities, from fine to coarse, straight to curly. Its bond-building technology focuses on internal repair rather than heavy surface coating, making it compatible with many styling routines.

• Safe for chemically treated, colored, and heat-styled hair
• Light enough for finer hair, nourishing enough for thicker textures
• Can be integrated into weekly or more frequent maintenance regimens

Who is this for: The Nexxus Intense Bonding Treatment is aimed at anyone noticing weakened, brittle, or visibly damaged hair who wants a salon-grade, science-backed repair step at home. It’s especially useful for people who regularly bleach, dye, or heat-style their hair, or for anyone seeking to rebuild strength and improve moisture and elasticity without heavy oils or silicones. Use it as part of the full Amino Bond system to maximize bond rebuilding and longer-term hair health benefits.

Key ingredients and benefits: ProteinFusion blend with five essential amino acids and keratin protein that penetrates the hair fiber, patented bond-building technology that rebuilds inner bonds, and Nexxus H4 complex supporting moisture, strength, shine, and elasticity.

Usage reminder: Apply to clean, damp hair after shampooing and conditioning with Amino Bond products. Work evenly through hair, leave in, and style as usual. For best results, incorporate into your regular haircare routine.

Ingredients

Water (Eau), Cetyl Alcohol, Stearamidopropyl Dimethylamine, Dimethicone, Caprylic/Capric Triglyceride, Glutamic Acid, Cysteine HCl, Serine, Glycine, Histidine HCl, Hydrolyzed Keratin, Collagen Amino Acids, Hydrolyzed Elastin, Polyquaternium Crosspolymer-3, Polyquaternium-28, Phenoxyethanol, Mineral Oil (Huile Minérale), Citric Acid, Glycerin, Distearoylethyl Dimonium Chloride, Fragrance (Parfum), Cetearyl Alcohol, Ethylhexyl Hydroxystearate, Acrylamidopropyltrimonium Chloride/Acrylamide Copolymer, Sodium Gluconate, PVM/MA Copolymer, Sorbitan Oleate, Trideceth-6, Sodium Citrate, Iodopropynyl Butylcarbamate, Coumarin, Hexyl Cinnamal, Limonene, Linalool, Bismuth Oxychloride (CI 77163).