The Best Hair Bond Repair Products to Shop For Stronger Hair, Stat

Why bond repair technology is taking over the haircare aisle.

Date March 26, 2025

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Looking to strengthen damaged hair? It’s time to get scientific. “Bonds are important for moisture, elasticity and shine,” says Peter Schuetz, measurement science leader at Unilever. There are three types of bonds in our hair — ionic, covalent and hydrogen — and they act as a bridge between proteins that make up the hair fibre, so having a strong, healthy bridge is crucial for hair to look its best.

While hydrogen bonds are the most abundant, they are also the weakest and easily broken or damaged by external factors such as heat. “The new Nexxus Amino Bond line has been designed to repair hydrogen bonds, thanks to the formula’s inclusion of amino acids that are small enough to penetrate deep into the hair cortex,” says Schuetz.

Whether it’s in the form of shampoos, conditioners or masks, bond repair technology will be taking over the haircare aisle because these products not only rebuild broken bonds but can also prevent further internal damage.

Ahead, the products that promise to do just that.

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SheaMoisture Amla Oil Bond Repair Leave-In Conditioner

Providing all-day hydration and protection against humidity, this lightweight conditioner controls frizz and locks in moisture from day to night.

OGX Bond Protein Repair Shampoo

Strengthen your strands while you cleanse with OGX's new bond repair shampoo. Using dual-action bond technology that works within the hair’s cortex and on the surface, it targets the most damaged areas of the cuticle, helping to keep hair strong and smooth.

Function of Beauty Pro Bonding Leave-In Treatment

Available in formulations designed for both straight and wavy, and curly and coily hair, Function of Beauty Pro Bonding Leave-In Treatment addresses all signs of damage caused by colouring, bleaching and heat tools.

Dove Bond Strength and Peptide Complex Shampoo

Powered by Dove’s innovative patented technology (Bio Protein Care + Peptides), this strengthening shampoo is designed to treat and prevent damaged hair from the inside out, bringing much-needed bounce and shine back to your strands.

Joico KBond20 Defy Damage Power Masque

In just two to five minutes, this rinse-out mask builds and protects bonds from thermal, environmental and mechanical damage. It’s formulated with keratin technology, protective lipids and 18 amino acids, providing your strands with the nourishment and tools they need to shine.

Nexxus Amino Bond Shampoo

Over time, our hair loses keratin (a very important protein) due to over-styling, colouring, environmental stress and more. Nexxus’ Amino Bond Shampoo, and the line’s corresponding conditioner and treatment, help to repair up to two years (!) of protein loss.

Kerasilk Strengthening Bond Builder

Want hair that’s stronger and more resilient? This Kerasilk treatment is a great place to start. Promising to restore damaged hair by up to 98 per cent for hair that’s twenty times stronger (really!), the Strengthening Bond Treatment is clinically proven to improve hair’s elasticity.

Amika The Kure Intense Bond Repair Hair Mask

This rich, ultra-moisturizing mask has been clinically proven to one make hair 3.2 times stronger, eight times more conditioned, with 69 per cent less breakage — in just one use.

AVEDA Botanical Repair Bond-Building Pre-Shampoo Treatment

This treatment has intensive repairing and strengthening power derived from natural ingredients, Aveda’s first pre-shampoo treatment promises strands that are three times stronger and more resilient.

Virtue Damage Reverse Serum

Packed with hair-identical protein, the Damage Reverse Serum instantly repairs broken bonds, breathing new life into your strands.

Living Proof Triple Bond Complex Leave-in Hair Treatment

Once a week is all you need to see major results from this hair-strengthening treatment that repairs existing damage and prevents further damage from occurring.

L’Oréal Professionnel Absolut Repair Molecular Rinse-Off Serum

Featuring a fast-absorbing texture and heat protection up to 230 degrees, this rinse-off serum is easy to use and is a must for severely damaged hair.

A version of this article first appeared in FASHION’s March 2024 issue. Find out more here.

This article contains affiliate links, so we may earn a small commission when you make a purchase through links on our site at no additional cost to you.

Souzan Michael Galway

Souzan Michael Galway is a beauty editor and copywriter who has spent the last 15 years reporting on the beauty industry. She covers everything from innovative product launches and buzzy new ingredients to how evolving beauty trends reflect what's going on culturally. During her downtime, she can be found playground-hopping with her toddler and golden retriever.

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