Redken Extreme Length Leave-in Treatment

RRP $36.00


Redken Extreme Length Leave-in Treatment is a colour-safe leave-in treatment with biotin to fortify hair from root to tip, and soy protein to improve overall hair growth and prevent breakage.

*Average star rating within the product image is based on a Review Crew panel of 87 and is correct as of 3/07/2020


Redken Extreme Length Leave-in Treatment


79 Reviews

Rating / Reviews

Incentivized Review

Easy peasy leave in treatment

The Redken Extreme Length leave in treatment is so easy for a lazy hair person (me). Just pop it in after you wash your hair and away you go! The first time I used this I used a bit much, and probably put it a bit close to my roots as I found my hair got oilier quicker than usual after the wash. The only thing I would like to see on the tube is a guide of how much to use. After I worked it out, it’s been a dream. My hair feels lovely and healthy after using this, along with the Extreme Length Shampoo and Conditioner. I will probably repurchase this treatment as it leaves my hair feeling well cared for.
Incentivized Review

Hair felt soft and silky

This leave-in treatment is on the lighter side. After shower, I would towel dry my hair and squeeze a 10 cent piece into my hand. This was more than enough needed for the treatment to do its job. My hair did not feel weighed down by this leave-in treatment. In fact quite the opposite, it left my hair feeling soft, silky and light. Would recommend if you have normal hair, however this may be too light for people with dry/damaged hair.
Incentivized Review

Perfect leave in treatment.

I received this as part of the review crew and I have loved it! I for one am always drawn to leave in treatments because my hair is super fine, this treatment really left a noticeable difference to my hair. It looked and felt cleaner for longer, felt much healthier too. It's definitely a product I will be purchasing again when I run out.
Incentivized Review

Lovely treatment

I was lucky enough to trial the Redken Extreme Length Leave-in Treatment and I will definitely be buying this product! Nice packaging with a lovely, subtle fragrance. I normally find leave in treatments a bit heavy for daily use but this product had great consistency and didnt leave my hair hair feeling greasy. My hair was softer and easier to manage and I have noticed a significant drop in breakage. Redken Extreme Length Leave-in Treatment will become part of my hair routine form now on.
Incentivized Review

Salon soft in the comfort of your home!

Paired with the shampoo and conditioner, the treatment made my hair soft and shiny. I loved how easy it was to use and the slick package makes it easy to store. This treatment has a nice soft smell that isn't too overpowering. I feel like the treatment gave my hair the nourishment it needed and made it feel super soft and healthy. My hair felt equally as soft whether I blowed dried or air dried, and had that salon soft feeling that it hard to get at home!
Incentivized Review

Less is More

I used the Redken Extreme Length Leave-In Treatment as part of the 3-step system with the Shampoo and Conditioner. For reference, I have thick hair (and quite a lot of it) which is dry. The leave-in treatment is packaged in an upside down tube compared to the shampoo and conditioner bottles. Easy to squeeze a dollop of treatment. After using this with the shampoo and conditioner, I didn't experience any noticeable increase in length but I did notice slightly less hair fall-out after washing. Thinning hair is not a concern for me but this would be a good product if you are concerned with hair loss. Both the shampoo, conditioner and leave-in treatment have the same noticeable cherry like scent (which reminds me of cough medicine!). My hair felt soft and lightweight after washing. After towel-drying my hair, I apply a good-sized amount into the palm of my hands and run it through my hair. Depending on how much I used, some days my hair felt a bit tacky or weighed down so I definitely feel like less is more with the treatment.
Incentivized Review

All hair types- please use!

I am never a person to go for a leave in treatment ( I have fine hair). So obviously the worry is being weighed down! Well I can eliminate those fears- lightweight!!!!! Again this whole range has smelt amazing, the length factor is a benefit, but I believe it takes a bit of time to notice any major growth. Great for taming frizzy hair! Helps with split ends and shine. So worth the money- you don't need much and it will last you forever! I truly believe that this product range for extreme length can be used for almost anyone's hair, it is so universal and easy to use. I would recommend as a weekly must have for your hair! I would definitely be purchasing this asap! Thank you Beauty Crew! I needed this range in my life, I only experienced benefits from this!
Incentivized Review

Ah Redken, you’ve done it again!

This leave in conditioner is a must have. My hair drys so much more nicely naturally if I have applied this to damp hair. I have noticed stronger and longer hair after only a few weeks - and as an added bonus, super silky hair!
Incentivized Review

Leaves hair soft and healthy

I am often skeptical of leave in treatments because my hair is quite fine and leave in treatments can leave my hair looking oily and flat. This product didn't do that, my hair still felt light enough and soft. It calmed my flyaways down a bit too. The smell is nice and too overpowering which is perfect for a leave in product. At the end of the day it isn't the best treatment I have ever used in my life but it is still great for an off the shelf product.
Incentivized Review

Lovely LIGHT leave in treatment.

I was lucky enough to trial this product which I loved! The packaging was on point and it made my hair feel healthy and soft. It was nice and creamy without being heavy on the hair like I find most leave in conditioners to be! Will be repurchasing this in the future!
Incentivized Review

Loved it!

I am a big fan of leave in treatments and this one did not disappoint! I loved this treatment! It left my hair feeling nourished, smooth, hydrated and tangle free! And it smells delightful! It works fabulously when used in conjunction with the matching shampoo and conditioner from the same range! Loved it!

Say hello to long, strong hair with less breakage

Thank you to Beauty Crew and Redken for this amazing trial opportunity! I have been so fortunate to participate in ReviewCrew and this Redken trial is one of the highlights of being a ReviewCrew member. The generous package contained a shampoo, conditioner and a leave-in treatment. I have long hair reaching bra-strap length, which is dry, coloured and fairly damaged, and have not had any haircut for almost half a year due to Covid! Redken Extreme Length arrived at such a perfect timing - without hairdresser visits I need my hair to be strong. They do not disappoint me at all. The leave-in treatment comes in a long inverted squeeze tube which is very convenient to use. The treatment is of a fairly thick consistency. It has a rather sweet scent. I am more accustomed to using leave-in treatment oil (rather than leave-in cream). At the beginning of the trial, I wasn't so sure about this. I don't normally blow dry my hair, and I always have a feeling that leave-in cream makes my hair a bit sticky or tacky after use. However, over time, I found that the trick is to use this leave-in treatment on wet hair - VERY wet hair, which seem to help the cream to "absorb". On first application, I already notice I experienced significantly less hair loss during the wash. On subsequent applications I notice I experienced significantly less hair breakage. There is a major improvement in the strength of my hair. Towards the end of the trial, my hair has less frizz, particularly when I use enough amount of leave-in treatment. Overall, it looks healthier. Before the trial I was contemplating cutting my hair shorter after Covid, but now that I am liking my long hair so much I'm not sure if I want to go short!
Incentivized Review

On the fence

This product was nice and light on the hair (word of caution don’t be heavy handed or take to far up the hair.) I found it didn’t help with my oily roots and if I put too much on or took it too far up then I would need to have a shower the next day as my scalp would feel itchy. I have tried better leave in treatments in terms of hydration and breakage. I did notice a difference with my hair length but I can’t say that this alone helped or if it was due to the fact I also used the shampoo and conditioner of this range.
Incentivized Review

Good treatment

The Redken Extreme Length Leave-in Treatment was like most leave in treatments it didnt make my hair feel oily or like there was a leave in product In it. It did smell nice but i dont think my scalp was itchy from the leave in treatment as i never put Any leave in products near my scalp. I do believe it goes well along with the shampoo and con and did help with lengthening my hair. It soften my hair and made it feel healthy. I would use it again but again only for a week or 2 just to help with the length of my hair.
Incentivized Review

Does what it says it does!

I’m not one for leave in treatments, I always thought that they left my hair sticky and sometimes even greasy, depending on the type I was using. With so many half-used bottles in my bathroom cupboard, I ruled out leave in treatments altogether, until I tried Redken’s leave in treatment. It was so light that it didn’t leave my hair looking greasy. It also made my hair look healthier, which was such a good result for me, based on my previous experiences with leave in treatments.
Incentivized Review

Love this!

This treatment is great as you don't need to use a lot of product and it doesn't weigh the hair down too much or leave it feeling greasy. I was using this product along with the Extreme Length Shampoo and Conditioner and noticed that my hair is a lot healthier with less breakage and split ends. It also feels thicker however, I am unsure whether it increased the rate at which my hair grows. Either way, I definitely recommend.
Incentivized Review


I liked the 3 part system that this came in: shampoo, conditioner, leave in treatment. The treatment is nice to use with a creamy texture that is moisturising yet light on the hair. It leaves the hair soft and smooth. I have caught myself a few times thinking I should get a hair cut, which means my hair is growing and maybe this product was a help with that. I would recommend it.
Incentivized Review

Smells great

Using the leave in mask with the shampoo and Conditioner. It has left my hair feeling nice and soft, with the ends of my hair looking noticeably smoother and minimal dead ends. I can’t tell if it has helped with the growth of my hair, but it is slow to grow. Unsung a small amount the leave in mask goes a long way
Incentivized Review

Nice add on, but not 100% needed

I used the treatment alongside the shampoo and conditioner- just like the other products, this treatment smells really good! It was easy and hassle free. i only ever needed a tiny amount- I found if I used too much it made my hair sticky. While I did really like the treatment I'm not sure what benefit it really offered when using the entire range.
Incentivized Review

Treating treatment

Loved the addition of a leave on treatment in the range. I used this as a quick fix when I skipped conditioning in the shower and found it did it’s job well. Felt slightly greasy and thick upon application but landed hair loook and feel great after a day or two. Would highly recommend