Good stuff
Smells great and is helping strengthen my hair from the roots out. I'd buy this again.
Kérastase Resistance Extentioniste Length Strengthening Scalp Serum 50ml SIZE: 50ml 4.5 of 44 reviews
SIZE: 50ml
4.5 of 44 reviews
Official Stockist
$90.00
4 installments of $22.50
Own it from $10/week
Most Helpful Positive
"Don't know a good thing til it's gone"
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Fortify your lengths, with Kérastase’s unique energising serum to maintain long hair. When your hair growth is slowing down and you need to repair damage from dyeing and styling, Kérastase Résistance Extentioniste Serum is your solution. Kerastase Résistance Extensioniste Serum contains a powerful synergy of restorative ingredients to treat hair.
What customers say
Age:
- 20s
- 30s
- 40s
- 50+
Hair Concern:
- Fine or limp hair
- Breakage and split ends
Hair Curl Type:
- Curly
- Straight
- Coily
- Wavy
Hair Texture:
- Curly
- Straight
- Coily
- Wavy
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Questions & Answers
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Kérastase Resistance Extentioniste Length Strengthening Scalp Serum 50ml
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Kérastase Resistance Extentioniste Length Strengthening Scalp Serum 50ml Reviews
4.5 of 44 reviews
83% recommend this product
Most Helpful Criticism
Not sure
I’ve been using this product for a few weeks in conjunction with the rest of the line. While I feel my hair condition has considerably improved with this produc...
Good stuff
Smells great and is helping strengthen my hair from the roots out. I'd buy this again.Great fortifying serum
A great smelling leave in serum from Kerastase that is nice and light to apply. My hair is dry and brittle ( I dye it all the time!!). This serum provides the nutrients to strengthen and rebuild. I have only just started to use the product so no obvious results yet but I really enjoy using it! Definitely worth a go.Good stuff
Definitely noticed a difference in the growth of my hair, only downside is the product does not last very long! Satisfied with the outcome however :)Gives great conditioning lift and body
I like this more as a volumising product. I can't afford or justify the size and price of this mid pandemic as I have lost 80% of my income and this didn't make a difference to my hair growth etc. But the actual finish it left was beautiful- made my hair look like I'd just come from the hair dresser.Lovely consistency
This is one of the better hair serums I have tried, it doesn't feel tacky and leaves scalp feeling nourished without feeling weighed down or heavy. My hair overall looks a lot more healthier and shiny after using thiswaste of money
This was a massive waste of money, did not work/do anything for me expect make my hair feel heavy and waxy. I have thick coarse frizzy hair so it can take a lot of product but I found no improvement in my hair qualitynot the best
Not sure if this did anything, made my scalp feel like it had a lot of build up, thick and greasy. Also you need to use quite a lot to spread this all over your scalp. I would not purchase again.Does it’s job
A lovely light serum that has made a real difference to breakage as well as sealing the cuticle. Excellent serum, works well with the whole range.Magic!
I have been using this product for 9 months and can confirm it has been magic for my hair. My hair has grown faster and never been stronger! I have long fine hair that used to seem to stop at a certain growth point but this has definitely improved the length!Not sure
I’ve been using this product for a few weeks in conjunction with the rest of the line. While I feel my hair condition has considerably improved with this product line, I cannot say if this scalp treatment has made a difference due to only having used it a handful of times. Worth trying if you’re willing to wait for results! Smells amazing and does not make scalp oily or tacky.Hairs best friend
Beautiful sorry feeling. Only just started using this and I love itToo expensive for what you get
I bought this hair serum not that long ago (under 2 months ago) and it's almost finished. I only apply it to my hair after I've washed it, when it's damp (every second day.) I apply maybe 3 skirts to cover my whole head, otherwise it doesn't feel like I've used enough. Even after using 3 full skirts of the dropper I still feel like I need more moisture in my hair, especially towards the ends. I re...Read MoreWould recommend
I've bought this product 2 times already, and besides that I use it up quickly is product has really helped in my hair growth journey. Recommend for those with stubborn hair that doesn't want to grow like mine.Great
Lightweight texture that hydrates and stimulates hair growth.Great hair serum
This works wonders when used together with the rest of Extentioniste range.Effective but expensive
I found this product was effective in combination with a few things to get my hair to slowly recover from years of work related stress that left me with awful ragged dry brittle hair that i really should have left the hair dresser cut 20cm off. Have been using this for 9 odd months and have seen a definite improvement in hair strength, texture and the amount on my head. I found the bottle i had la...Read MoreThe best!!
This is my second bottle. I love it. I may be a little too heavy handed with this stuff. It smells beautiful and I doesn’t weigh my hair down. Strangely enough it has cured my dandruff issue I was having. Too early to tell if it’s making my hair grow. Though I have had comments on how shiny the top of my hair is lookingI purchased this serum on the advice of my hairdresser to nourish my hair from the scalp down as it lacked shine and I wanted it to look healthy.
I purchased this serum on the advice of my hairdresser to nourish my hair from the scalp down as it lacked shine and I wanted it to look healthy. This is a really great product for feeding hair from the roots for stronger healthier hair. It’s so easy to use, I loved the dropper to distribute the right amount. I simply massaged the serum into my scalp and after using it for a while I noticed a diff...Read MoreSo amazing!!! Love this apart of my daily and nightly routine.
So amazing!!! Love this apart of my daily and nightly routine. The smell is soooo good and it is smooth when applying to your face. Definitely recommend! Have used this for around 3 weeks now and can say I will be restocking very very soon. Very affordable and you get what you pay for.I bought this due to the fabulous review done on the whole Extentioniste program by Beauty Crew themselves.
I bought this due to the fabulous review done on the whole Extentioniste program by Beauty Crew themselves. I had recently gotten a pretty drastic chop as well as beginning my path onto colouring my hair again and wanted to finally start investing in good hair products. I bought this as I felt my hair was a bit too short and in a moment of panic wanted something to help growth. I would say this ...Read MoreOkay
I normally like Kérastase's products but this one let me down. I noticed no difference in the hair growth, just my normal average hair growth that I have.Best for hair growth
This is the best range of hair products I have ever used. It's pricey, but if you can afford it, I would highly recommend it. I tried for a long time to grow my hair but the split ends meant I had to keep cutting it. After using this, I've grown my hair to halfway down my back and it's very healthy growth. I have fine, straight hair. The serum doesn't leave any residue and promotes growth. It real...Read MoreBeautiful smooth finish
Beautiful smooth finish, I've noticed a big change in my fair since I started using this, it's far shinier than it was before.A+
I have been using the Resistance range, including the extentionste serum, for over 6 months and have noticed a huge difference in my hairs strength and length. This serum is my favourite step in the routine, it feels nice on the scalp and dries nicely. Will definitely repurchase!Amazing!
I LOVE this brand! And I have super dry frizzy bleached hair and they always get my hair feeling so soft and smooth!Does wonders for my hair
This serum does wonders to help improve the condition of my hair. My hair is very long anyway but it definitely gave it a nice smooth and shiny finish when I used this hair serum.HOLY GRAIL OF GROWTH
Ladies! This is the holy grail of growth!
This miracle serum has helped my hair grow 4 inches in just 3 months. It is worth every cent!
Sooo good.
Really happy with this and lasts a long time. A little bit goes a long way, easy to apply. Have noticed so much growth in my hair since using. 5******First serum I have used and loved
I thoroughly enjoyed this and wished the bottle never ended. I have recently suffered from thinning hair unexpectedly and loss of length mainly on one side. I switched to a whole kerastase routine and my hair is thriving. Bain densifique shampoo for the win and this I used about 3-4 times a week after washing my hair and wow. Milky and not oily at all never irritated my sensitive scalp or weighed ...Read MoreLove, love, love this
Thanks love this product. I had some hair loss & breakage around my face from a medical condition, after surgery & I was starting to freak out. I can see that my hair is now growing back & thickening up again & it’s strong & healthy.Amazing!
I used this serum in conjunction with the shampoo & mask (as a conditioner) & have seen a noticeable growth in my hair. Highly recommend.Love it!
When it comes to hair, whatever the concern, Kerestase products never disappoint. Worth every single cent!Love it
I’ve been using kerastase masks for a long time, recently tried and loved the initialiste serum so thought I would give this a go! I love these products - they’ve been so great for my hair. I’ve got long blonde locks and using kerastase has led to so much healthy growth - I get endless compliments when I’m at the hairdresser. The only thing with this serum (similar to the initialiste) is that it c...Read MoreHair feels way stronger and healthier since using this
This is a great serum, I've been using it for about a month and it seems to be having an impact on my hair growth.Love!!!
I love this product so much! Defiantly something I will keep using! I have already noticed thicker hair in 2 weeks which I thought was unbelievable results as I have tired so many products to try grow my hair back! I use this with the shampoo and conditioner and I’m obsessed!wow this actually worked
This is literally this first thickening product that has actually made a noticeable difference for me. I didn't expect it to do much given all the other products I have used over the years that didn't do anything for me but this one did. It's a milky-ish serum that I dropper on to my scalp and massage all over with my fingertips, then style and it really make a difference after a few uses. Will be...Read MoreNot sure if worth the money
Not sure if results justify hefty price tag. Might just stick to shampoo and conditioner in this range.Best serum on the market
Have purchased a few times now and my hairdresser cannot get over how much my hair has grown. Love!Good Company- Not sure on benefits
I bought this with the shampoo and conditioner of the extentioniste range, seemed like a good idea at first, but really not sure of the benefits. Not much serum can be applied each time and for the money I didn't really notice a difference. Would recommend Kerastase just not this productGreat!
Smells great and worksLove it!
This stuff not only smells great but works. It definitely has supported my hair growing and makes it feel soft as well. Even when I’m a little generous with the product, my hair doesn’t get greasy. Great on wet and dry hair. Will repurchase!Great!
i use this paired with the conditioner and shampoo and the whole range is amazing. it has done wonders to my hair and allowed it to grow long and strong.Love it
I love this product makes my hair so soft and definitely works Will repurchase when I’m finishedI’m in love
I’m in love with this whole range I wish kerastase came out with it sooner it actually works my hair has improved so much I have noticed a big difference in the length and the thickness of my hair you literally only need a few drops all over your hair if you use too much like I’m guilty of sometimes it will leave your hair looking oily
