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Serum Extentioniste Scalp & Hair Serum

Strengthening scalp and hair serum for stronger fiber from the roots.

Serum Extentioniste Scalp & Hair Serum is rated 4.3 out of 5 by 6.
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  • Size

    $51.00

    | 50 ml
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How To Use
Apply Serum Extentioniste directly to the scalp on cleansed, towel-dried hair. Depending on hair type, 2 pipettes for fine hair and 4 for thick hair, position the pipette directly at the root and scalp to distribute 1 full pipette of the serum in a straight line from the front to the back of the head. Follow the pipette with your fingers to massage the serum into the root and scalp as you work through each section. Once application is complete in all sections, massage the entire head to distribute the serum evenly and comb through. Leave in and proceed to blow dry. Recommended to use at least 3 times a week.
Learn how to use Serum Extentioniste video tutorial
Strengthening scalp and hair serum for stronger fiber from the roots. This energizing leave-in treatment is key to reinforcing and promoting a healthy scalp. Applied with a gentle scalp massage, it's ideal to achieve strong, long healthy hair.


  • Ceramide: provide surface recovery, assuring beautiful hair fiber as they smooth and soften
  • Creatine: an amino acid that penetrates deep to reinforce the internal structure of the hair fiber
Hair Serum Ingredients
Aqua / Water ● Polyquaternium-37 ● Paraffinum Liquidum / Mineral Oil ● Amodimethicone ● Polysorbate 20 ● Quaternium-87 ● Stearyl Alcohol ● Menthoxypropanediol ● Behentrimonium Chloride ● Safflower Glucoside ● Maltodextrin ● Propylene Glycol ● Candelilla Cera / Candelilla Wax ● Ppg-1 Trideceth-6 ● Propanediol ● Chlorhexidine Digluconate ● Isopropyl Alcohol ● Trideceth-6 ● Acrylates Copolymer ● Sorbitan Oleate ● Polyquaternium-11 ● Rose Extract ● 2-Oleamido-1,3-Octadecanediol ● Cetrimonium Chloride ● Camellia Sinensis Leaf Extract ● Xanthan Gum ● Tocopherol ● Bht ● Sodium Citrate ● Parfum / Fragrance.
Rated 4 out of 5 by from Want to use but I have some concerns I want to love this product, but my biggest concern is the fact that it contains mineral oil. Can I get some reassurance that this won’t damage my hair further? I’m trying to grow it out and make it healthier.
Date published: 2018-10-31
Rated 2 out of 5 by from Not thrilled with this product I have been having severe issues with my heavily highlighted long hair after additional chlorine was added to our city water. I now have breakage and hair loss at the root. Very scary! Therefore, I purchased the Resistance line of pre shampoo and shampoo (which I love, love, love!) along with the Extensioniste conditioner (it is just ok with not enough slip) and kerastase - Serum Extentioniste Scalp & Hair Serum. Yes, I desperately need my hair back to i Its softness and shine before the city water chlorine hair disaster !! I also purchased the new Initialiste Concentrate. I really like the Initialiste Concentrate but find that kerastase - Serum Extentioniste Scalp & Hair Serum is essentially the same tyoe of thing, but with the undesirable side effect of drying out my bleached highlights and rendering my lengths un-combable. Do yourself a favor and order the Initialiste scalp serum instead; A far better product for bleach damaged hair that sheds. If you have healthy hair that sheds, this product should work for you.
Date published: 2018-09-17
Rated 5 out of 5 by from Works very well I use all Kerastase products, shampoo, conditioner, heat protectant cream, elixir spray, hair spray, and I am in love with them all! That’s the main product line used at the salon I go to. I will continue to use Kerastase and can’t wait to see what new products they come up with!
Date published: 2018-09-17
Rated 5 out of 5 by from Super Hair Growth! I have been using this product for 4 months now. I had a liver transplant last October. The anti-rejection drugs (I have to take for the rest of my life) caused my hair to fall out. My hairdresser suggested I try Extensioniste. She used the booster in the salon & use the serum after shampooing. The results were visible within 2 weeks! So much new growth! The spots where my scalp was visible are now are filled in with new growth. The new hair is strong & thick. It is worth every penny!!!
Date published: 2018-09-15
Rated 5 out of 5 by from In love !!! Been using this set for 60 days works amazing! Serum doesn’t make your hair greasy at all. Smell like heavenly
Date published: 2018-08-30
Rated 5 out of 5 by from Works Great! I have been using for one month! I love it. It smells great and makes my hair so soft and manageable I recommend it. I have processed frizzy hair and i can notice a definite difference. I wish it did not come in a glass bottle. Its hard to travel with. Hoping they change the bottle to plastic. also, hoping for a travel size of this.
Date published: 2018-06-28
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