• 3.38 fl. oz. | a

RAPID REPAIR

BOND BUILDER+ LEAVE-IN HAIR MASK

clinically proven to reverse damage in 4 minutes*

Regular price $33
size

Naturally powered and clinically proven, meet our NEW leave-in treatment mask that repairs hair from the inside out and reverses damage in only 4 minutes. Infused with plant-based bond technology to repair damage and breakage from heat styling, colour treatments and daily stressors like salt, surf, and sun. Nourishing Australian Aloe and Polycare® Split Therapy technology seal split ends, and restore strength to leave your hair shinier, healthier looking and softer than ever.

 

size: 3.38 fl. oz. bottle 

how to use

After you shampoo SKIP THE CONDITIONER OR HAIR MASK. Apply to damp, towel dried hair. Work through the mid-lengths and ends and do not rinse out. Leave in for at least 4 minutes, then style as usual. Use after every wash, weekly, or monthly depending on your level of hair damage. Why 4 minutes? It takes 4 minutes to repair damage at the molecular level by targeting the cortex of the hair.​

Depending on your hair length and thickness, use 1-4 pumps to coat your hair from mid-lengths to ends. For best results, use after the Rapid Repair Bond Builder+ Shampoo and follow with Bond Builder+ Finishing Oil.

Why skip the conditioner? Conditioner works to seal the hair cuticle, and this new format of hair technology needs to be able to penetrate the strands to the cortex to repair.

the low down

  • Aloe-based
  • Cruelty-free & vegan
  • Salon quality & scalp friendly
  • Powered by Aussie naturals
  • Safe for colour & chemical treated hair
  • Free from silicones, sulphates, parabens

smells like

Light pomegranate, like a fruity, refreshing cocktail on that vacation you keep meaning to take.

BUNDLE UP & SAVE

  • Three bottles of Bondi Boost hair care products on a black background

    BOND BUILDER+ TRIO

    the hero lineup that's clinically proven to reverse damage & repair hair from the inside out*​
  • BOND BUILDER+ SYSTEM

    BOND BUILDER+ SYSTEM

    reverse damage + repair breakage + protect

BOND BUILDER+ LEAVE-IN HAIR MASK

-
Regular price $33

you’ll obsess over

    Natural Bond Builder+ Technology

    Made from a complex of hydrolysed soy protein, red onion and ginseng extract, Vitamin B and amino acids that work to repair the key structural protein of the hair, providing resistance, elasticity and shine

    Polycare® Split Therapy Technology

    Derived from Guar, repairs split ends

    Australian Aloe Vera

    is at the heart of our formulas due to its’ nourishing and hydrating properties. Aloe contains proteolytic enzymes which breakdown dead skin cells on the scalp that clog the hair follicle, clearing the way for new hair to flourish

    Squalane & Plant Oils

    Lightweight hydration that smooths frizz and restores long-lasting softness and shine

    Niacinamide + Biotin

    Supports a balanced scalp environment while promoting stronger, thicker-looking hair

    Peptides & Proteins

    Strengthens broken bonds and rebuilds from within for healthier, more resilient strands

what BondiBoost customers are saying

Overall rating: 4.8054056 / 5 from 370 reviews.

AI Generated Review Summary

The BOND BUILDER+ LEAVE-IN HAIR MASK is a leave-in treatment that repairs hair from the inside out, making it feel soft and nourished. Customers praise its amazing smell and noticeable difference in hair appearance. The product provides deep nourishment, enhances shine, and leaves hair looking healthier and more manageable without any heaviness.

Summary topics

  • Hair Feel: 31%
  • Product Smell: 19%
  • Product Effectiveness: 26%
  • Hair Appearance: 58%

Review topics: ["absorbs","ingredients","results","smells","weight","improvement","feels","issues","spots","texture","residue","price","consistency","packaging","amount","line","formula","look","hair","use","substitute","hydration","style","difference","boost","oil","smooth","works","effect","mask"].

Review highlights

  • "My hair looks so healthy it’s just crazy My hair feels amazing and looks amazing." — Sefika
  • "“I couldn’t believe the difference after just one use—my hair felt soft, healthy, and had an incredible shine. ”" — Jeya
  • "My hair feels so hydrated and silky, with a gorgeous shine and zero frizz." — Dunja R.

Reviews

Lightweight Restorative Leave-in Conditioner

"I love this product for a light weight and everyday leave in conditioner. I use this when my hair feels damaged and brittle and after a few weeks it is lovely and soft again."

— Megan P. (5/5)

I was hoping this product

"I was hoping this product would improve my hair but was very dissapointed ,as my hair felt and look tatty after a day, I loved your heavenly serum that disappointingly was discontinued as it made my hair shiny clean and looked great all week and looked & felt hydrated"

— Linda B. (1/5)

My once a week hydration

"One of my favorites that I use once a week! I have thinning dry hair and it works perfectly. You don't need much. It hydrates and doesn't weigh my hair down. It's perfect for days when you need a quick shower and its hair wash day."

— Terri R. (5/5)

So simple to use

"This is such a quick, simple and effective hair mask. My husband loves the results it gives his hair after wash day, what split ends?!"

— Angeline (4/5)

Leaves my hair so soft!

"If you want super soft hair with some shine then this is the product for you. My hair has been looking abit dull lately after I got highlights and this product has made it really shiny and soft. I’m really happy with the results"

— Ellie (5/5)

No more split ends!

"I work in a gym and constantly putting my hair back in a ponytail/bun. With doing that for so long my hair breaks and gets split ends really bad! I feel after using this product that it’s strengthening those bonds again and I don’t find it necessary to go back to my hair curl to get another trim! Will use this product religiously!"

— Katei (5/5)

Rapid repair

"I much prefer the rapid repair leave in serum"

— Sophie P. (3/5)

Masque

"I like the way it nourishes my hair particularly after ocean swimming, my hair looks smooth and shiny"

— Gail W. (5/5)

I have fine and shedding

"I have fine and shedding hair this products helps to keep fly away hair in place and also love the scent."

— Koula A. (4/5)

Great Product

"I love the product but the last 2 pumps have broken, why don’t you use the pump style you use for the frizz free serum, I’ve been using it for 4 years and never had any issues. Please review the packaging of the bond builder mask"

— Kerrie R. (2/5)

Q&A

I only wash my hair with shampoo and conditioner twice a week. Can you use this on days when I just wash my hair with water?
Hi Angie, Great question! The Rapid Repair Bond Builder+ Leave-In Mask is designed to be used as a weekly treatment for that extra boost of nourishment and hydration. It's best to apply on your shampoo and conditioner days for maximum benefit, and to avoid over treating.
How often can I use the new bond builder range? Is it safe to use weekly?
Hi Abbie, Thanks so much for reaching out to us. We appreciate your interest in our newly revamped Bond Builder Rapid Repair range. The good news is, our new Rapid Repair has also been updated to a more lightweight formula so all hair types can now experience stronger, shiner, healthier locks. Meaning this range can be used in place of your regular Shampoo and Conditioner, even for finer hair types. You can use our shampoos as often as you like. We recommend washing your hair every other day or every 2 -3 days depending on your. However, if your hair is visibly oily, your scalp is itching, or there's flaking due to dirt, those are signs it's time to wash your hair. If you have any further questions, feel free to get in touch with us at wecare@bondiboost.com.au - Larissa from the CS team.
My hair is very tangled and knotted after shampooing, especially not using conditioner, so it is very hard to apply this leave in mask evenly. Any suggestions?
Hi Alyssa, Thanks for getting in touch with us. Oh sorry to hear, I would recommend going through smaller sections of your hair with a wide-tooth comb before applying the Bond Builder Leave-In Hair Mask. Starting from the ends and work your way up to avoid breakage. If you have any further questions, feels free to get in touch with the CS team at wecare@bondiboost.com.au
Is this safe to use during pregnancy?
Hi Mel, Thanks for the question! Our haircare products contain naturally derived (many certified Organic) ingredients with a very gentle preservative. While we believe our products are safe to use, I recommend providing the ingredients to your medical professional to give the all-clear first. Feel free to get in touch with us if you have any further questions. - Larissa from the CS team

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of BondiBoost. We do not verify or endorse any claims made in these reviews.