Redken Extreme Strength Builder (250ml)


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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.

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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




(69 Reviews)

  • 5    53
  • 4    11
  • 3    4
  • 2    1
  • 1    0

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Showing 1 to 50 of 69 reviews :
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Haven't bought this in years...wish I'd gone back to it sooner! After 15yrs as a blonde, I finally had no choice but go darker colour to save what was left of my snapping off hair. My hairdresser pointedly refused to touch my hair with blonde for another 6 months! One use of this has softened my hair and given back some shine, I wash my hair every four days, and will alternate with my regular conditioner. Will never go back to using cheaper options!

22 December 2014 by


Does just what it says, my hair feels soft and looks in much better condition

27 October 2014 by


repair miracle!!

this is a literally a repair miracle in a tub!! I know its expensive but its because it works... I've messed around with my hair a little too much taking it for granted thinking it would be ok, but my last treatment left it snapping and coming off in my brush and hands,,, was too scared to even wash it!! I couldn't stop crying for days, because this is protein it helps build back your hair, I'm into my third week of using it and its saved my life, yes my hair is thin now but its stopped and started protecting my hair that's left, I leave it for 1 to 3 hours wrapped in clingfilm for a deep condition, I also the anti snap leave in conditioner ... remember though too much protein isn't good for damaged hair so once a week I use the redken all soft conditioner and leave it over night wrapped in clingfilm as your hair needs a balance of moisture in too, its finding the balance you need to repair your hair depending on how badly damaged it is

29 September 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) !

1 September 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.

19 August 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.

13 August 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!?

14 July 2014 by


Redken extreme

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

1 July 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.

30 June 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.

20 May 2014 by



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

13 May 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!

28 April 2014 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.

8 July 2013 by



This is my first ever time writing a review and it's only because if I could, I would recommend the whole female population at the same time to use this amazing Redken Extreme Strength Builder. I've always died my hair dark, naturally I'm a dark ashy blonde. I went light blonde a little while ago, spent hundreds of dollars on expensive hairdressers only to see my precious hair that I had been growing long and healthy for over a year SNAP. I was left with a disgusting looking dry blonde birds nest on my head and went back to dark. I had my ends cut off and wanted to do nothing but cry... I'm being serious - we all know how it feels to know that you've done this to yourself and even spent money on it. I started using Nioxin System 5 (shampoo/conditioner/scalp treatment kit) which did a lot of good for me, it's for people with thinning and chemically treated hair and it really did stop the falling out and snapping for the most part - but it wasn't until I started using Redken's Extreme Strength Builder mask twice a week that I started getting my old hairdo back! On top of that, I used to have to straighten my hair in order to leave the house, because I have half curly hair that is frizzy. Now, I let my hair dry naturally overnight after rinsing the mask out, and my curls look better than ever! This is how I use it (what they did in the salon): After washing and conditioning on towel dried hair - apply the mask and take a hand towel, wet it with warm water and squeeze it so it's no longer dripping but still warm. Wrap the towel around your hair and leave it on for an hour. I watch TV or paint my nails. After an hour I rinse the mask off and towel dry my hair. I go to bed and wake up with dry hair. Then I apply a tiny bit of mask to my ends and I just leave it in there.

19 June 2013 by


Stop buying drug store products and GET THIS!

I have extremely damaged hair. It's not a hyperbole when I say this, hairdressers would shame me because of how dead my hair was. From years of peroxide on a monthly basis my hair ended up being half dead, like actually. If you're thinking I'm just another reviewer who has revived some damaged to my hair after a bit of dying it YOU'RE WRONG! It was absolutely MASHED! Moving on... I bought this product after many rubbish and pricey drug store products and WOW. After having my dead ends trimmed twice and using this my hair is soft again. Now it's not completely rescued because like I said my hair was MASHED! But it's certainly getting there at a much faster pace than without. Do follow what others say about leaving it on for a while, those extra few minutes go a long way because my hair feels silky which i never thought it could be after years of damage. If you want your hair to grow this is a great product because it has protein in it and a higher dose than most products which just mask your hair to make it feel better. I use this along with redken anti snap and they're like a dream team! My advice for best results to those who have really damaged hair is get those dead ends sealed off then use this because my god it is helping and there is HOPE!!!

15 June 2013 by


Redken extreme strength

Love this Redken Extreme Strength Builder and love the quick international delivery. Highly recommend.

24 May 2013 by


Extreme care

This Redken Extreme Strength Builder is a superb product for hair that is dry and brittle, and works really fast!

21 May 2013 by


The Redken Extreme Strength Builder (250ml) is a "must have" for everyone who wants to have nice, healthy hair. Have used it for some years now, and going to continue doing that.

7 May 2013 by



I'm so happy about this Redken Extreme Strength Builder. It helped me a lot.

6 May 2013 by



I love the Redken Extreme Strength Builder, it is the best one I've tried so far and I've tried a lot of different brands.

18 March 2013 by


Redken Extreme Strength Builder (250ml)

Super Redken Extreme Strength Builder

12 March 2013 by


Works great, smells bad!

This Redken Extreme Strength Builder works really well, my dry hair gets soft and shiny. The problem is the smell, I think it does not smell good at all...

12 February 2013 by


Redken Extreme Strength Builder (250ml)

I have tried it just 1 time, but already can feel the difference, hair is so smooth

28 January 2013 by



I really liked this Redken Extreme Strength Builder conditioner. My hair looked and felt fuller and thicker even after the first use and I'm hoping it will really make a difference to some damaged areas of my hair after a few treatments. The only thing I wasn't keen on was the smell but that's if I'm being picky. It's a brilliant product and I shall definitely be buying it again.

22 January 2013 by



Love this product. I use this every 3 days at night. Wash and towel dry hair then run through the hair to the ends. sounds horrid but leave hair to dry naturally, sleep in the treatment and wash out in the morning. Best results!

9 January 2013 by


Super Strengthener

This product is really good, like most of the Redken products. My hair is dyed blonde and needs a lot of care, this treatment gives great results. It says leave it 5-15 min in, but after just 3 min it is a big difference. Love Redken Extreme Strength Builder.

4 January 2013 by


Redken extreme

This product is absolutely amazing!!! I usually struggle with dry split ends, especially after having highlights done. But if I use this, my hair just stays so strong and healthy and I don't get any of those dead dry ends - it's really a fantastic product and I can't go without it!!

7 December 2012 by


I'm very satisfied!

29 October 2012 by


Very pleased

Yes this is a worthwhile product, have used all hair treatments from cheaper to the dearest and this is every bit as good as the dear option. Use only if you have dry, brittle highlighted/coloured hair.

29 October 2012 by


Great. Thanks to Redken Extreme Strength Builder my hair is now repaired, strong and full of volume. Can't live without it!

11 October 2012 by


view on redken extreme protein mask

I buy Redken Extreme Strength Builder quite regularly ESPECIALLY from 'lookfantastic' because i can get it cheaper on here than anywhere else i.e hair salons etc. It really does help to bind my fragile hair and makes it a lot stronger. My hair has been able to grow since i started using it several months ago. It has finally regained strength since it was bleached and frazzled a year prior. Thank you look fantastic, and of course Redken! It smells gorgeous too...the only problem with the product is it can leave hair feeling rather dry but this is just where the protein is working to strengthen the hair and this can be easily rectified by using a normal or leave in conditioner after the mask has been rinsed away. Happy customer. Will continue buying :)

27 September 2012 by


Review of Redken Extreme Strength Builder

First time I have used this product and thought it was amazing. Will definately be purchasing this in future.

24 September 2012 by


Great value!

Redken Extreme Strength Builder is one of the better products I've tried for my extremely over bleached hair. It has really made my hair so much smoother and easier to brush through. At first I thought it was kind of expensive, but one jar will last me about two months as you don't need a lot of product to get a good result. The smell is very pleasant too.

19 September 2012 by


Excellent product

I have previously used drug-store hair treatment and this is the first time I have tried a salon brand and i am very satisfied. My hair looks like i came straight from the salon every time i have used the treatment and it is silky soft - i am definately going to purchase the product again.

17 September 2012 by


Not for me

After reading the rave reviews about this product I thought I'd try it. My hair has been bleached several times, different shades of blonde, red, brown and obviously as a result is extremely damaged. This conditioner seems to feel great when it's on the hair and being rinsed out, but as soon as my hair dries (I dry it naturally because of the damage) it just feels really rough and coarse. I've been using it for a couple of months and it has made no difference. I am about to go back to the All Soft Heavy Cream to see if this is any better, as I used this before with more success.

10 September 2012 by


Very nice product! Good offer 3 redken products in price of 2! Also thank u for your discount!

3 September 2012 by


This is an excellent product, love it!

3 September 2012 by


Review of Redken Extreme Rescue Force

Smells amazing and makes my dry, brittle, fine highlighted hair feel supple look glossy and feels very hydrated. Love, love, love.

31 August 2012 by


Great site

Excellent service and great offers I will be using this website again, well done

16 August 2012 by


Deep Conditioning

If your hair is in horrible condition & you're looking for a deep treatment to both strengthen your hair as well as improve shine - this is the product for you! I have recently tried some Redken products for the first time & have been very impressed! This is one of the best treatments that I have used... & it smells amazing!

13 August 2012 by



Thank you Redken for a superb product. I had soft perm for the first time in ten years as my hair was lacking in body, however, my hair did not respond well and was frizzy and would not hold a style. Looked up my favourite beauty site and bought this Redken product and I am so pleased I did, even after the first treatment my hair is soft and easy to style, again thanks.

31 July 2012 by


Very good

I used this along time ago and didn't really rate it. This time I'm really pleased, nice smell and soft, shiny and smooth hair! Can't comment as whether it improves strength as not used it long enough yet - but I hope it will!

30 July 2012 by


Amazing treatment

I recently purchased this amazing treatment and I've tried it out about 4 times. I've been torturing my hair with a straightener for several years now and tried so many different producs who claim to do this and that for my hair without any results. I can honestly say that this is the first time I've thought that my money were well spent, or to put it in a other way: this product is worth every penny. My hair is now dramatically stronger, fuller and shiny. It's so easy to work with. And in no time! I also love the feeling when I'm rinsing out the product, my hair is cashmere-soft! I would recommend this to you if your hair is damaged, weakened or dry. Thank you Redken!

18 July 2012 by



My hair already seems more healthy and shiny

16 July 2012 by


Excellent! Soft and shiny. Perfect on chemical treated hair!

8 July 2012 by


Review of Redken Extreme Rescue Force

Made my knotty, fragile hair really silky and shiny

29 June 2012 by


Review of Redken Extreme Rescue Force

Really wonderful product for dry curly hair. Condition is so much smoother and hair doesn't go frizzy, which mine is inclined to do.

26 June 2012 by


Redken extreme

I brought this product as a last resort after spending tens of pounds on other products.I have experienced recently split ends and breakage to my hair. This product does exactly as described and it has brought my hair back to its normal healthy condition. I would highly recommended this and i won't be using anything else... well worth the money!!!

24 June 2012 by


Review of Redken Extreme Rescue Force

Not as good for my hair, which is extremely dry and over processed, as the All Soft Heavy Cream.

18 June 2012 by



My hair is really fine and fluffy, and there is a lot of it. This keeps the fluffyness under control but doesn't leave it feeling coarse the way that some protein treatments can. Love it!

17 June 2012 by

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Redken Extreme Strength Builder (250ml)

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Redken Extreme Strength Builder (250ml)