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Bond Builder
Maria Nila product information

Bond Builder

For damaged hair

5.0
Rated 5.0 out of 5 stars
11
$44.00

A lightweight leave-in treatment that repairs damaged hair bonds, reduces breakage, and protects against future damage. Delivers softer, smoother, shinier hair instantly and healthier-looking hair over time.

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  • Repairs & strengthens damaged hair bonds: A lightweight leave-in treatment powered by patent-pending Bond Building Technology to help repair damaged hair bonds, strengthen the hair fiber, and protect against future damage caused by heat styling, color treatments, and everyday stressors. Provides heat protection up to 450°F / 230°C.
  • Repairs years of damage in minutes: Targets weakened hair bonds to help restore strength, resilience, and overall hair health. Hair feels stronger and more resistant to breakage with continued use.
  • Healthier-looking hair from the first use: Instantly improves softness, smoothness, shine, and manageability while helping to detangle, tame frizz, and leave hair feeling nourished without weighing it down.
  • Clinically proven results: Repairs up to 82% of damaged hair bonds in 3 minutes and delivers up to 73% less breakage in 1 week.* Designed to transform damaged hair into healthier-looking, more resilient hair over time.
  • Vegan, cruelty-free & responsibly made: Developed and manufactured in Sweden, Maria Nila products are certified by PETA, Leaping Bunny, and The Vegan Society. As a Certified B Corporation, Maria Nila is committed to creating high-performing haircare while supporting people, communities, and the planet.

*Based on instrumental testing and consumer perception studies. 

To rebuild and protect – use in damp hair

1. Shampoo the hair and rinse, repeat
2. Apply a hair mask for extra hydration
3. Towel-dry the hair
4. Apply the Bond Builder section by section
5. Do not rinse. Style as desired.

When used in damp hair, the cuticle is open, allowing the Bond Builder to rebuild internal bonds and strengthen the hair, and create a protective neo-cuticle to protect from future damage.

To soften and shield – use in dry hair
Apply to dry hair as a finishing touch on dry hair to smooth lengths and provide an additional protective barrier against external damage. Use Bond Builder as the first layer in your usual styling routine.

  • Repairs up to 82% of broken disulfide bonds*
  • 73% less breakage*
  • 74% experienced improved hair quality**​
  • 76% experienced nourished hair **​
  • 8/10 participants chose Maria Nila over main market competitor **​
  • Heat protection up to 230°C / 450 F *

 
* Compared to untreated/bleached hair in instrumental testing​
** In blind test compared to main market competitor

Bond Building Technology rebuilds the hair’s internal bonds and protects the keratin structure.

Amino Acids improves the shine and strength of the hair as well as combability and smoothness of both dry and wet hair.

Biomimetic Chia Peptides proactively protect the hair shaft by creating a neo-cuticle on the hair to provide additional strength, support and style holding properties to each hair strand.

Sunflower Extract and Quaternium-95 protect the hair against damage and preserve hair color longer. The antioxidant absorbs UV radiation and protects the bindings from weakening and the hair from damage caused by sunlight.


Aqua/Water/Eau, Alcohol Denat., Propylene Glycol, Glycerin, Polysorbate 20, Dipropylene Glycol, Salvia Hispanica Seed Extract, Helianthus Annuus (Sunflower) Seed Extract, Leuconostoc/Radish Root Ferment Filtrate, Glycine, Isoleucine, Proline, Sodium PCA, Threonine, Histidine, PCA, Aspartic Acid, Arginine, Alanine, Phenylalanine, Serine, Valine, Polysilicone-29, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Lactate, Propanediol, Butylene Glycol, Quaternium-95, Sodium Chloride, Benzoic Acid, Dehydroacetic Acid, Alpha-Isomethyl Ionone, Citrus Aurantium Peel Oil, Geraniol, Geranyl Acetate, Hydroxycitronellal, Linalool, Limonene, Pinene, Rose Ketones, Vanillin, Tetramethyl Acetyloctahydronaphthalenes, Terpineol, Phenoxyethanol, Parfum/Fragrance, CI 61570/Green 5, CI 47005/Yellow 10

Get to know Bond Builder

About Bond Builder

Bond Builder immediately strengthens the hair from within, protects against future damage, and leaves hair smoother, shinier, and more resilient.

Maria Nila Bond Builder is made for weak, damaged, color-treated, or heat-styled hair. It is suitable for all hair types, textures, and colors.

Yes! It is perfect for hair that has endured a lot of chemical products and treatments since it helps preserve and enhance color vibrancy by protecting the hair’s structure and sealing the surface.

Because extensions are already heavily processed and “non-living,” they can react differently than natural hair. The formula contains ingredients such as silicones and ethanol that may affect certain types of tape adhesive, so we recommend keeping the Bond Builder away from the tape area.

As all Maria Nila products, the Bond Builder is 100% vegan, and it does not contain sulfates or parabens. Bond Builder is not silicone-free.

How to use

Maria Nila Bond Builder is a leave-in treatment.

Maria Nila Bond Builder can be used on both wet and dry hair. On damp hair, it penetrates the hair deeper, rebuilds bonds, and strengthens. On dry hair, it protects while adding softness and shine.

Maria Nila Bond Builder is designed to complement your routine. You can use it after shampoo instead of conditioner or apply it after a mask when your hair needs extra moisture and care. Bond Builder is a leave-in treatment that should not be rinsed out.

Apply the Bond Builder section by section to make sure the hair is evenly covered.

Bond Builder can be used daily or as needed for instant care and long-term strength.

Yes. Apply Bond Builder first to strengthen and protect the hair, then layer your usual styling products as desired.

Technology & Performance

Bonds are the internal structure of the hair. Hair damage primarily results from chemical treatments such as bleaching, coloring and perms. These processes break the internal structure of the hair fiber, especially the disulfide bonds, which are crucial for maintaining strength, elasticity, and shape.

Maria Nila Bond Builder goes straight to the core, rebuilding and reinforcing the internal bonds and protecting the keratin structure that keeps your hair strong, flexible, and resilient

Bond Builder is the first multi-benefit bond builder that not only reconnects bonds but also protects the keratin structure, protects the surface with a neo-cuticle layer, and provides heat protection – all in one step.

The Bond Builder offers instant results and heat protection, making it a versatile daily treatment. It also delivers softness and shine from the first use.

Yes, The Bond Builder has heat protection up to 230 °C / 450 °F.
5.0
Rated 5.0 out of 5 stars
Based on 11 reviews
Total 5 star reviews: 11 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
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11 reviews
  • CA
    Cynthia A. C.
    Verified Buyer
    Jun 1, 2026
    Rated 5 out of 5 stars
    My hair changed after this! 😍

    First time using it and I like it so much! I immediately feel the difference in my hair: it's soft, shiny, and smells delicious!

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  • ML
    Mioara L.
    Verified Buyer
    May 19, 2026
    Rated 5 out of 5 stars
    Exactly what I was hoping for to boost my hair health and support my overall transformation!

    Give it a try, as I did. I am in love and in awe of this must-have hair product. Finally, I found out!

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  • FS
    Fatima S.
    Verified Buyer
    May 11, 2026
    Rated 5 out of 5 stars
    Amazing

    I am in love with this product! My hair feels so much smoother and stronger ever since I started using this great product!

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  • GP
    Gabriela P.
    Verified Buyer
    Apr 16, 2026
    Rated 5 out of 5 stars
    I’m honestly really impressed with the results.

    I’ve been using the Maria Nila Bond Builder and I’m honestly really impressed with the results. My hair was feeling quite damaged and weak, and after a few uses, I noticed it felt significantly stronger, softer, and much more manageable.

    What I love the most is that it doesn’t weigh my hair down or leave any heavy residue — it feels light but still deeply nourishing. I’ve also seen less breakage when brushing and styling, which is a huge plus.

    Another thing I appreciate is that it’s 100% vegan and free from sulfates and parabens, so it feels like a cleaner option for my hair care routine.

    The only downside for me would be the price, but considering how little product you need each time and the visible results, I do think it’s worth it.

    Overall, I would definitely recommend it, especially if your hair is damaged or chemically treated.

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  • AF
    Angela F.
    Verified Buyer
    Apr 12, 2026
    Rated 5 out of 5 stars
    Great Addition to Hair Routine!

    This has been a wonderful addition to my hair routine! Leaves my hair feeling soft & silky. The fresh scent is great & not too over powering. I will sometimes use this with the Repair Leave-In conditioner for an added conditioning bonus & it doesn't weigh my hair down or make it greasy.

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