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Kérastase Résistance Extentioniste Serum 50ml 50ml

4.7 of 22 reviews

$75.00

4 instalments of $18.75

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4 instalments of $18.75

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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

SUPERIOR - 91% recommend

4.7
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

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Questions & Answers

(1 Question)

Kérastase Résistance Extentioniste Serum 50ml

Kérastase Résistance Extentioniste Serum 50ml

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Customer Reviews

Review & Earn

4.7 of 22 reviews

91% recommend this product

  1. 18

  2. 2

  3. 2

  4. 0

  5. 0

Most Helpful Positive

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!

Most Helpful Criticism

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.
  1. 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.
  2. 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!
  3. 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!
  4. 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.
  5. 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!


  6. 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******
  7. 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 down my hair actually the opposite. Hair feels light as you run it through your hair from your scalp. I needed a quick and effective routine as a busy mum and this IS IT. My hair has literally come back from the brink in only 2 months of use (1 bottle serum) convenient pipette sucker to distribute it easily and evenly on scalp. Quick blowdry on low heat and makes the hair smooth and silky lightweight and healthy. My before and after pics in 2 months and my hair from the roots have doubled in thickness not sure which particular product but using with the densifique shampoo and conditioner and never want to change now. Definitely sticking with these products. Worth the price even though it seems a bit of an outlay it really does work
  8. 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.
  9. 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.
  10. Love it!

    D

    When it comes to hair, whatever the concern, Kerestase products never disappoint. Worth every single cent!
  11. 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 can feel a bit Sticky almost in your hair until it completely dries through but I haven’t found this a major problem.
  12. 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.
  13. 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!
  14. 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 repurchasing forever I would say.
  15. 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.
  16. 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!
  17. 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
  18. 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!
  19. 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.
  20. Love it

    Lauren

    I love this product makes my hair so soft and definitely works Will repurchase when I’m finished
  21. 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
  22. Review & Earn
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