Kérastase Résistance Extentioniste Serum 50ml 50ml
Is this for you?
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
- Breakage and split ends
- Fine or limp hair
Hair Curl Type:
- Very curly/African/Caribbean
Frequently bought with
Please wait while we find a match
Questions & Answers
Kérastase Résistance Extentioniste Serum 50ml
Get an expert to answer your question about this product!
Customer ReviewsReview & Earn
4.6 of 33 reviews
87% recommend this product
Most Helpful Positive
Most Helpful Criticism
Too expensive for what you getI 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 More
Would recommendI'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.
GreatLightweight texture that hydrates and stimulates hair growth.
Great hair serumThis works wonders when used together with the rest of Extentioniste range.
Effective but expensiveI 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 More
The 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 looking
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.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 More
So 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 More
OkayI 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 growthThis 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 More
Beautiful smooth finishBeautiful 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 hairThis 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 GROWTHLadies! 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 lovedI 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 More
Love, love, love thisThanks 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 itI’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 More
Hair feels way stronger and healthier since using thisThis 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 workedThis 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 More
Not sure if worth the moneyNot sure if results justify hefty price tag. Might just stick to shampoo and conditioner in this range.
Best serum on the marketHave purchased a few times now and my hairdresser cannot get over how much my hair has grown. Love!
Good Company- Not sure on benefitsI 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 product
Great!Smells great and works
Love 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 itI love this product makes my hair so soft and definitely works Will repurchase when I’m finished
I’m in loveI’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