Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz
Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz
Hero image 0 of Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz, 0 of 3
Kérastase

Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz

4.6 stars out of 311 reviews
(4.6)|
311 ratings

Key item features

  • Protects the hair against aggressors in the environment.

  • Rejuvenates and re-hydrates dry damaged hair.

  • Sweeps away impurities in your hair.

  • Give your hair a much-needed boost without weighing it down.

  • Repairs the hair while strengthening it against future damage.

Current price is $55.99$32.94/fl oz
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives between Feb 11 - Feb 13
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Sold and shipped by R&B Beauty
4.306701030927835 stars out of 5, based on 388 seller reviews(4.3)
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Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz $55.99 $32.94/fl oz

Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz
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Kerastase Serum Extentioniste Scalp & Hair Serum 1.7 oz

4.6 out of 5 Stars. 311 reviews

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Customer ratings & reviews

4.6 out of 5 stars
stars311 ratings292 reviews
How item rating is calculated
  1. 5 stars79% (247)
  2. 4 stars11% (33)
  3. 3 stars5% (14)
  4. 2 stars1% (4)
  5. 1 star4% (13)

Reviews summary

Pros
  • : Has a clean scent.
  • : Maintains a clean and refreshed scalp.
  • : Leaves a light sensation on the scalp.
  • : Product leads to increased hair length and strength.
Neutral
  • : Can be affordable, but also perceived as expensive for some users.
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Showing 1-3 of 292 reviews

Aug 29, 2025
Liv DG
5 out of 5 stars review

Seller Verified Purchase

Amazing

[This review was collected as part of a promotion.] Love it! I've definitely noticed a difference and it smells really good! It also doesn't leave your hair feeling greasy.

Review from kerastase-usa.com
Helpful?0ZIKRXCA5MNM906881974
Apr 26, 2020
Xochilt
5 out of 5 stars review

Seller Verified Purchase

Great addition to hair care

I use this as my last step after washing my hair with Extentioniste Shampoo and Conditioner. I section off my hair in 3 sections ( I have thick hair) and then massage this into my scalp. When I first tried it , I felt good sensation on my scalp ( continue to do so). I feel that it's helped with my scalp not be so itchy.

Review from kerastase-usa.com
Helpful?0ZIKRXCA5MNM906881974
Jun 21, 2022
Walmart customer
5 out of 5 stars review

Seller Verified Purchase

Best Serum

I've been using this serum for about two weeks and let me tell you, this is the best thing that`ve ever tried. My hair was so weak and falling out so much and since I've been using this magic serum, my hair have been stronger and it stop falling out!!!! Give it a try!

Review from kerastase-usa.com
Helpful?0ZIKRXCA5MNM906881974