Reviews & comments

Rating: 4Based on 121 reviews
  • Most helpful positive
    5 months
    Rating: 5 out of 5
    verified customer

    Fantastic

    I had very dry and itchy scalp, as well as dry lengths before. I decided to try another hair care, of which this product is one of the new products in my hair routine (I also use Neccin No1 + No3, Sp Wella Luxeoil Keratin Restore Mask, Maria Åkerberg Scalp Treatment Mentha, Kérastase Genesis Thermique leave-in, Olaplex No 9 and Kérastase Elexir Ultimate L’Hulie Originale Hair Oil. Very different series and brands, that is). I use this after washing my hair, and it has really helped to fix my problems. Today my scalp is calm, and the lengths have a lot of moisture, the wear between salon visits is also less than it has been before, I lose less hair, my hair feels stronger, and it grows faster than before. I have nothing negative to say about this product. A super product! ⭐️ #lykosocial #lykoreview #kérastase #serum #lykoreviews

    Translated from swedish

    5161 views
    to leave a comment
  • 6 hours

    Use

    Hi, how often should you use this product?

    Translated from norwegian

    14 views
    • Customer service at Lyko
      6 hours
      Hi Helin 🌟 Thanks for the question! Kérastase Resistance Serum Extentioniste is recommended to be used 2-3 times a week, on dry or towel-dried scalp. Apply directly to the scalp section by section, and massage in – it should not be rinsed out. The product strengthens the hair from the root and contributes to healthy length growth over time. Feel free to let me know if you have any more questions 💖

    to leave a comment
  • 3 days
    Rating: 5 out of 5
    verified customer

    Absolutely perfect

    Wonderful

    Translated from swedish

    209 views
    to leave a comment
  • Hair growth at the hairline?

    Hey, does this product give good results at the hairline if you try to grow out in that area?

    Translated from swedish

    1505 views
    • Customer service at Lyko
      1 month
      Hey Tyra! Yes, Kérastase Resistance Sérum Extentioniste Scalp Serum 50 ml can definitely provide good results even at the hairline if you want to promote hair growth in that area 😍 Take care!

    to leave a comment
  • 2 months

    Combine with Genesis serum

    Can this be used together with the Genesis serum?

    Translated from swedish

    2011 views
    • Customer service at Lyko
      1 month
      Hey Sally! 😊👋 They are applied to the same area, which can lead to them spreading out over each other, so I wouldn't combine them in the same routine! The scalp can become overstimulated or irritated, and it becomes difficult to determine which one gives results. IF you want to combine them, use Extentioniste in the evening and Genesis in the morning, but pay attention to how your scalp reacts. I would say if you want longer and stronger lengths, then go for Extentioniste, but if you're struggling with increased hair loss, then take Genesis. Good luck with your hair 🥰

    to leave a comment
  • 2 months
    Rating: 5 out of 5
    verified customer

    Super great product

    Works really well! My hair is getting life and joy again. I apply it to my scalp every evening, and it doesn't get greasy at all. After about 3-4 weeks, my hair is more manageable, and after about 3 months, it has grown like weeds. It also smells divine!

    Translated from swedish

    1683 views
    to leave a comment
  • Rating: 5 out of 5
    verified customer

    So good!!

    Builds up the hair from the roots down

    Translated from swedish

    1776 views
    to leave a comment
  • This or Genesis?

    Hi! What is the difference between this hair serum and the genesis serum in results? My goal is to get longer and thicker hair, but also stronger if possible, so I heard that one should ideally combine both, but if one had to choose just one, which would give the best results? 😊

    Translated from swedish

    4175 views
    • Customer service at Lyko
      3 months
      Hey Tyra! 🌞 It’s always a bit of a challenge to find the right products in the beauty jungle for you! My best tip is to check out our free hair test, where our experienced hairdressers can recommend products that are tailored just for you and the goals you’re looking for! 🙌😍 You can go directly to the test via the link: lyko.com/sv/beauty-scan2

    to leave a comment
  • 3 months
    Rating: 1 out of 5

    Bad

    Does nothing for the hair, I put it in the hair roots and massaged it in often. Saw no difference in hair growth, runs out quickly and super expensive! Save your money

    Translated from swedish

    3543 views
    • Customer service at Lyko
      3 months
      Hey Emma! 🥰 It’s a bit different what works for us when it comes to products. Hair and scalp products often take time to show visible results, and sometimes you might need something else if you don’t see any results after a while of use ❤ For the best effect, it’s recommended to combine the serum with the rest of the Extentioniste line, like shampoo and conditioner, but if you still don’t notice any difference, it might be worth trying another product. If you want tips and advice for your specific hair, the hairdressers are always ready to help, and you can find them in the Lyko app under the search function - BeautyScan ✨

    to leave a comment
  • 3 months

    Combination

    Can you use it together with the Kerastase Genesis serum? The pink one

    Translated from swedish

    3215 views
    • Customer service at Lyko
      3 months
      Hello there Marre 👋😊 You can use them together, but it's best to alternate between them, for example, use Genesis Serum in the morning and Extentioniste Serum in the evening, or every other day 🙌 If you apply both at the same time, it can be a bit much for the scalp and risk overloading it with active ingredients 🤍 Good luck! 🥰

    to leave a comment
  • 4 months

    Contents

    Does this product contain PFAS?

    Translated from swedish

    3055 views
    • Customer service at Lyko
      4 months
      Hey Daniela! ✨ When we looked at the ingredients from the list above, we don't see a hint of PFAS. Hope you like it! ❤

    to leave a comment

KérastaseResistanceSerum Extentioniste scalp serum 50 ml

493 kr*
Rec. price 695 kr
WOW-price
Free delivery option available, can be sent immediately
* Cannot be combined with discount codes.

A strengthening leave-in serum for damaged hair seeking healthier-looking lengths. Leaves hair revitalised and stronger.

Use:
Apply maximum 3 pipettes of Serum Extentioniste along all the scalp, once or twice a week. Using the tips of the fingers, work the Serum into the scalp, using circular motions.

50 ml
  • Category:Hair Oil
  • Article number:
    1015-502-0050

Gift with purchase

Buy at least 2 from Kérastase

Also available in bundle

Often bought together

1 071 kr

Recommended products

Customer service