Redken Extreme Strength Builder (250ml)


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Availability: In stock | Usually dispatched within 24 hours

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Repair and strengthen your dry, damaged hair with Redken Extreme Strength Builder. It’s an intense, silky rich fortifying treatment for your distressed hair.

Redken's exclusive Interbond Conditioning System delivers a unique 3D Repair Complex of proteins, ceramide, and lipids to provide internal strength, cuticle reinforcement and protective resurfacing. The condition of your hair will be beautifully enhanced with increased manageability and extra shine thanks to Redken Extreme Strength Builder.

Directions of use:

  • After shampooing apply to towel-dried hair.
  • Leave on for 5 minutes (for deeper conditioning leave on for as long as desired).
  • Rinse thoroughly.


Product Details


Delivery & Returns

Express Delivery Available - If ordered before 9pm, delivered by courier next working day. More Info »

If ordered before 9pm, delivered by courier next working day. Available on orders placed before 9pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock | Usually dispatched within 24 hours

Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing My Account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

Customer Reviews



4.723 4.723

(65 Reviews)

  • 5    51
  • 4    10
  • 3    4
  • 2    0
  • 1    0

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Reviewed on 01/09/2014 by

I love it

This product is so good :) I love the Redken extreme series, i would definetly recommend it to everybody (with damaged hair) !

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Reviewed on 19/08/2014 by

Extremely good

I have long, color treated hair and I have used this product quite a while. This mask smells amazing like blueberries and it does soften my hair and make my hair feel stronger. LOVE IT! I definitely recommend this product if you dye your hair and use heat styling on a regular basis.

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Reviewed on 13/08/2014 by

New love

This stuff is bloomin' amazing! My hair went from a fluffy snapped mess, to smooth and conditioned after the first use. I'll be taking this on holiday with me to keep my hair looking good. I never want to run out of this.

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Reviewed on 14/07/2014 by

An amazing product!! I absolutely love this. My hair went from dry and brittle to a complete dream. Have I mentioned it's amazing!?

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Reviewed on 01/07/2014 by

Redken extreme

Absolutist love this product brought back strength to my hair :) fast delivery a big thumbs up

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Reviewed on 30/06/2014 by

Alright so far...

Its alright for now.... I think the hair needs to be washed 4 times a week to notice a difference.

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Reviewed on 20/05/2014 by

I have used other products in this range and been really impressed, but haven't really felt this one was worth the price! My hair has highlights so has been feeling pretty damaged recently. It's recommended that you leave it in for up to 15 minutes, which I have been doing, and I find it an irritating length of time when I could feel and see better results using my normal conditioner (Joico's K-pak conditioner)! I would recommend the leave in treatment in this range, however, as it has certainly kept my hair in decent condition.

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Reviewed on 13/05/2014 by


Excellent for my fine, damaged and colour processed hair. Brings the life back to it and gives it strength.

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Reviewed on 28/04/2014 by


Over the past year and a half, I've gone from dying my hair jet black, to my natural blonde. After several rounds of bleaching away the black, my hair was ruined. Since it is curly, dry and coarse to begin with, I was left with a hay-like feel to my hair, with strands that snapped. I of course had to cut most of it off, and now, after a year of no dye or bleach, only the last 3-4 cms of my hair has any old dye in it. But, my hair is naturally dry and awful, no shine, and is always frizzy due to much needed layers. I've tried a lot of things to improve the general health of my hair, like coconut-, morrocan- and argan oil, no shampoo, and a vast variety of expensive treatments, but after i discovered the redken strength builder, the results are finally here. My damaged hair is much healthier, and my untreated hair has shine, and feels soft for the first time since my toddler years, no joke! I've been using it for about six months, every 2-3 weeks, more often if i straighten a lot. I leave it in for 1-3 hours, and the result is amazing. Anyway, this product is amazing, smells divine, a tub lasts for months, and it actually does what it promises. I'm never going back!

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Reviewed on 08/07/2013 by


I felt like a change was needed and proceeded to get my entire head of hair bleached at a salon! My hair was damaged before because of the exposure to the heat and humidity that South Africa so freely offers! The black was bleached out after 5hrs! I went back home hoping that my curly hair would be completely blonde after the next bleach treatment. A few days went past and my hair started becoming stringy, thin, brittle and very dry! The worst was when my hair started snapping off. I was in tears and very disappointed. So I gave it another few days and decided to colour over it all in the hopes that I could somehow look a little normal... that didn't happen. I then started googling Redken products in the hope that I could recover my hair. I came across the Redken Extreme Strength Builder. I started using the product and again I was in tears. Not because I was unhappy. But because I was so happy with the end result! My hair is repairing so nicely and quite fast I may add. So all in all Redken has yet another devoted and loyal customer. I am hooked to Redken officially. Thank you.

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Redken Extreme Strength Builder (250ml)

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Redken Extreme Strength Builder (250ml)