1. Home
  2. Brand
  3. Kérastase
  4. Styling & Leave-Ins
  5. Kérastase Résistance Extentioniste Serum 50ml

Kérastase Résistance Extentioniste Serum 50ml 50ml

4.6 of 36 reviews

$75.00

4 instalments of $18.75

Or 4 instalments of $18.75 with LEARN MORE

In Stock

4 instalments of $18.75

Or 4 instalments of $18.75 with LEARN MORE

Official Stockist

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

GREAT - 85% recommend

4.6
Read all reviews

Hair Concern:

  • Breakage and split ends
  • Fine or limp hair

Hair Curl Type:

  • Curly
  • Straight
  • Very curly/African/Caribbean
  • Wavy

Hair Texture:

  • Fine
  • Medium
  • Coarse

Frequently bought with

Please wait while we find a match

Questions & Answers

(1 Question)

Kérastase Résistance Extentioniste Serum 50ml

Kérastase Résistance Extentioniste Serum 50ml

Get an expert to answer your question about this product!

Kérastase Résistance Extentioniste Serum 50ml Reviews

4.6 of 36 reviews

85% recommend this product

  1. 28

  2. 3

  3. 4

  4. 1

  5. 0

Most Helpful Positive

Magic!

Spaige

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!

Most Helpful Criticism

Not sure

Maddi

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.
  1. Magic!

    Spaige

    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!
  2. Not sure

    Maddi

    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.
  3. Hairs best friend

    Cindy

    Beautiful sorry feeling. Only just started using this and I love it
  4. Too expensive for what you get

    Steph

    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 More
  5. Would recommend

    Rose

    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.
  6. Great

    A

    Lightweight texture that hydrates and stimulates hair growth.
  7. Great hair serum

    Nadya

    This works wonders when used together with the rest of Extentioniste range.
  8. Effective but expensive

    Dani

    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 More
  9. The best!!

    Kars

    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
  10. 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.

    debbie p. via BeautyCrew.com

    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
  11. So amazing!!! Love this apart of my daily and nightly routine.

    Claudia Balmforth via BeautyCrew.com

    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. 
  12. I bought this due to the fabulous review done on the whole Extentioniste program by Beauty Crew themselves.

    Heather S. via BeautyCrew.com

    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
  13. Okay

    B

    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.
  14. Best for hair growth

    Linh

    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 More
  15. Beautiful smooth finish

    Freda

    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.
  16. A+

    elly

    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!
  17. Amazing!

    Kait

    I LOVE this brand! And I have super dry frizzy bleached hair and they always get my hair feeling so soft and smooth!
  18. Does wonders for my hair

    Isabel

    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.
  19. HOLY GRAIL OF GROWTH

    Carly

    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!


  20. Sooo good.

    Paige

    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******
  21. First serum I have used and loved

    Cathryn

    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 More
  22. Love, love, love this

    Tina11

    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.
  23. Amazing!

    Rebecca

    I used this serum in conjunction with the shampoo & mask (as a conditioner) & have seen a noticeable growth in my hair. Highly recommend.
  24. Love it!

    D

    When it comes to hair, whatever the concern, Kerestase products never disappoint. Worth every single cent!
  25. Love it

    Madeleine

    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 More
  26. Hair feels way stronger and healthier since using this

    Jacinta

    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.
  27. Love!!!

    Dominique

    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!
  28. wow this actually worked

    Trent

    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 More
  29. Not sure if worth the money

    Sarah

    Not sure if results justify hefty price tag. Might just stick to shampoo and conditioner in this range.
  30. Best serum on the market

    Natalie

    Have purchased a few times now and my hairdresser cannot get over how much my hair has grown. Love!
  31. Good Company- Not sure on benefits

    Ella Grace

    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 product
  32. Love it!

    Holly

    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!
  33. Great!

    M.

    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.
  34. Love it

    Lauren

    I love this product makes my hair so soft and definitely works Will repurchase when I’m finished
  35. I’m in love

    Maryam

    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
  36. Review & Earn
Recommended for you

Find more of...

Related Searches