Please enter your email address below and we'll email you instructions to reset it
View large image
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:
Shop more Redken here
Write a review to be in with a chance of winning a £100 voucher
10 June 2015 by
Brilliant product & used once a week certainly makes a difference to the condition of my hair. Leave it in overnight to give an even better treatment.
Did you find this review helpful?
Report this review
8 June 2015 by
Last year I cut my elbow length healthy curly hair into an angled bob. This meant I had to use heat every single day (bad idea!!). I have been growing it out and again and due to heat use and being very lazy (couldnt be bothered with conditioner or masques) it is now bsl but in a horrible condition. I ordered this after reading the reviews and that the day it arrived I gave my hair a good trim to get rid of my split ends and left this on for 30mins. It has left my straw like limp curls so soft!! My curls seem to have revived as well :-) I will continue to use this once a week until my hair is in better condition, then hopefuly use it once a month from then on. You get a lot of product in the container and it has been well worth spending a little bit more to get such good results!
12 May 2015 by
My hair was really damaged through years of bleaching and straightening, the ends kept breaking off and it has become really brittle and hard to manage. I've tried a lot of products and this one definitely works the best for me. I've been using every time I wash my hair and the improvement is amazing, a little of this product goes a long way so it's definitely worth investing in if your hair is in need of a boost. My hair feels stronger and I'm no longer experiencing breakage, I'm using this in conjunction with some hair supplements and this is the best condition my hairs been in years
14 April 2015 by
Excellent product, delivered in a couple of days. Makes damaged hair feel soft and thicker. My hair has definitely grown since using this product. Best product I
've ever used.
30 March 2015 by
This conditioner is probably the only thing that saves my dry, thick, curly hair from looking like a frizzy mess. Whenever I use it I get complimented on how shiny my hair looks. Put it in for 10 minutes + to get the best results.
24 March 2015 by
I love using this product on my thick and slightly frizzy (due to the heat and humidity) hair, as it leaves my hair smoother, shinier and softer after every 'hair mask-ing' session. The consistency is like any hair mask; creamy and thick. However, a little goes a long way for this product and for the cost and the size of it, it is definitely worth the money.
3 March 2015 by
If like me, you have made the gigantic, painful and traumatic leap from box dyed, jet black hair, 10 colour levels up to Blonde, then this is a must. My long black hair withstood 6 rounds of full head salon bleaching and toning thanks to this little Redken beauty. Of course I've needed some good trims, but this formula has meant the overall damage has been limited. A short crop was my expectation upon starting my hair transformation, but here I am, still with thick hair below shoulder length. It's not like other protein rich formulas - it adds a good deal of moisture too, I found my hair felt soft and like healthy hair even when wet, with my natural waves restored. My hair literally has suffered the worst kind of abuse, so I really do recommend this as a damage limitation and restoration measure. I use it twice a week, only a walnut sized amount. Worth a try, its better than the scissors!
9 February 2015 by
I've been having a full head of bleach hi lites every 5-6weeks for 20 years, more recently my hair has become very broken, over processed and scorched in areas. I was devastated, and immediately got on to this site to buy the most nourishing products that I could. I tried various other top brands, which were nice, but always loved Refken, and after reading the reviews for the Extreme range, I bought the Cat treatment, wow! So I ordered the extreme shampoo and this deep conditioner, and I can honestly say, IT HAS SAVED MY HAIR!! I was about to have it chopped into a bob as my only option, but now my hair feels like new!
I sleep with it overnight if I can, but you still get amazing benefits from 5-10mins. I would recommend anyone with bleach damaged hair to invest in this a Redken Extreme range, you use less than high street shampoos and conditioners, so it's not actually expensive.
The CAT treatment also fantastic, my hair feels stronger already after only a few weeks (nourish well after this, is its protein to strengthen, and you need a deep conditioner after, this this one.)
AMAZING products, I'm stocking up!!
22 December 2014 by
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!
27 October 2014 by
Does just what it says, my hair feels soft and looks in much better condition
29 September 2014 by
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
1 September 2014 by
This product is so good :)
I love the Redken extreme series, i would definetly recommend it to everybody (with damaged hair) !
19 August 2014 by
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.
13 August 2014 by
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.
14 July 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!?
1 July 2014 by
Absolutist love this product brought back strength to my hair :) fast delivery a big thumbs up
30 June 2014 by
Its alright for now.... I think the hair needs to be washed 4 times a week to notice a difference.
20 May 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.
13 May 2014 by
Excellent for my fine, damaged and colour processed hair.
Brings the life back to it and gives it strength.
28 April 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!
8 July 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.
19 June 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.
15 June 2013 by
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!!!
24 May 2013 by
Love this Redken Extreme Strength Builder and love the quick international delivery. Highly recommend.
21 May 2013 by
This Redken Extreme Strength Builder is a superb product for hair that is dry and brittle, and works really fast!
7 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.
6 May 2013 by
I'm so happy about this Redken Extreme Strength Builder. It helped me a lot.
18 March 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.
12 March 2013 by
Super Redken Extreme Strength Builder
12 February 2013 by
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...
28 January 2013 by
I have tried it just 1 time, but already can feel the difference, hair is so smooth
22 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.
9 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!
4 January 2013 by
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.
7 December 2012 by
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!!
29 October 2012 by
I'm very satisfied!
29 October 2012 by
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.
11 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!
27 September 2012 by
nics from ashford
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 :)
24 September 2012 by
First time I have used this product and thought it was amazing. Will definately be purchasing this in future.
19 September 2012 by
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.
17 September 2012 by
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.
10 September 2012 by
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.
3 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!
31 August 2012 by
Smells amazing and makes my dry, brittle, fine highlighted hair feel supple look glossy and feels very hydrated. Love, love, love.
16 August 2012 by
Excellent service and great offers I will be using this website again, well done
13 August 2012 by
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!
31 July 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.
30 July 2012 by
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!
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.
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.
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.
Please see our returns policy.
77 Customer Review
Add to basket
In stock | Usually dispatched within 24 hours
Redken Diamond Oil Shatterproof Shine (100ml) (Free Gift)
Save up to 30% on Redken and receive a FREE full-sized Shatterproof Shine Intense, worth £32.50, when you spend £50. The free gift will be automatically added to your basket. Offer valid for a limited time only.
Redken Extreme Cat Protein Treatment (150ml)
Redken Extreme Shampoo (300ml)
Save up to 30% on Redken and receive a FREE full-sized Shatterproof Shine Intense, worth £32.50, when you spend £50
Redken Extreme Anti-Snap Treatment (240ml)
Redken Extreme Conditioner (250ml)
Redken Extreme Strength Builder (250ml)