Main content

Bain Extentioniste Shampoo

Length strengthening shampoo for slow growing, damaged lengths.
Bain Extentioniste Shampoo is rated 3.4 out of 5 by 10.
  • y_2021, m_11, d_27, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.20
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_CA, sid_bain-extentioniste-shampoo, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_kerastase-en_ca
  • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
  • CLOUD, getAggregateRating, 9ms
  • reviews, product

Bain Extentioniste Shampoo
Kerastase

Bain Extentioniste Shampoo

Length strengthening shampoo for slow growing, damaged lengths.

Select a Size
Loading...

Product Benefits

Bain Extentioniste is a hair strengthening shampoo and a hair strengthening treatment that boosts strong hair growth starting at the roots. Bain Extentioniste is a shampoo to help hair grow not only in length but in strength with Creatine, an amino acid that reinforces the internal structure of the hair fiber. Weak hair and breakage-prone strands are strengthened with this hair strengthening treatment. The internal structure of hair is rebuilt and sealed to provide greater protection throughout its growth. Growing hair out has never been easier with our shampoo for long hair growth, Bain Extentioniste.
  • Creatine: an amino acid that penetrates deep to reinforce the internal structure of the hair fiber
  • Ceramide: provide surface recovery, assuring beautiful hair fiber as they smooth and soften
  • Taurine: an amino acid with a protective effect on the hair fiber to help ensure visibly healthy and stimulated scalp environment


Key Ingredients





How to Use

How to use our Bain Extentioniste:
Step 1. Apply a quarter-size amount of our hair strengthening shampoo to wet hair.
Step 2. Massage and Lather the hair strengthening treatment through hair.
Step 3. Rinse the shampoo completely out of hair, avoiding too much friction.
Step 4. When finished, pair with Fondant Extentioniste to help grow hair out.
Learn how to use Bain Extentioniste shampoo video tutorial

Complete Your Routine

Complete your hair care routine with cleanse, treat, prime & night essentials.
Rated 4 out of 5 by from Smells great I purchased this a few weeks ago. I switched over from the genesis anti hair fall line because this was suggested when I did the hair diagnosis tool on their webpage. It is supposed to also prevent hair fall as well but I don't think it works as well as the genesis product line, my hair is moderately damaged from when I had bleached my hair 3 years ago and I do have hard water. I also noticed with the previous product it did take almost 2 months to start working so i am hoping that after a few more washes it will start preventing hair falling out as well. They are pricey but the last bottle lasted me 7-8 months( I wash my hair once a week) Other than that I think its a great shampoo, smells nice, makes my hair look great without making it greasy or dry.
Date published: 2021-06-03
Rated 3 out of 5 by from half the ingredients are just scents I would only rate this shampoo as average or fair. When you take the time to look up the actual ingredients the only ingredient that promotes growth is a castor oil. Theres some basic ingredients added in for texture, conditioning, silicones etc but then almost half the list is added for scent. I think its a very basic Kerastase formula with just some new perfumes and castor oil.... nothing special.
Date published: 2020-12-14
Rated 2 out of 5 by from Disappointing result I used the revitalizing shampoo and the extensionist serum for about 1 year and my hair is still the same length. I'm a bit disappointed. I don't know what to do to get a nice length ..
Date published: 2020-03-18
Rated 5 out of 5 by from Best brand ever I struggled with my hair all my life had to wear weave and braids to try and grow my natural hair. Since I stated using resistance i was skeptical that it won't work for my type of hair. I thought it was only for people with growing hair. Since using resistance line for almost a year now i don't wear braids or weave i have full hair health and shoulder length. Canadian winter time no issues my hair is health and I am happy with the discovery I wish that Kerastase could advertise it more because it took me time to discover this brand. Worth every dime!!
Date published: 2020-02-06
Rated 5 out of 5 by from Amazing I have really sensitive hair, it get damaged really fast but this shampoo saved my hair!! I love it and it really works. For more result I use it with the bain divalent to help balance my oily scalp and my hair has never felt so healty
Date published: 2019-06-12
Rated 5 out of 5 by from It works~ I lost around 20-30 hair per hair wash.So, I switched from a drugstore brand to Kerastase two months ago. I purchased Resistance Bain Extentioniste and Serum Extentioniste Scalp & Hair Serum. I lose less hair now (5-8 hair) . I am happy with the result.
Date published: 2019-01-13
Rated 2 out of 5 by from Not satisfied with shampoo I bought the entire Extentioniste line and so far I have used the shampoo and Fondant conditioner twice. Each time, my hair turned out to be frizzier and dryer than before. Perhaps it’s the Créatine that is drying out my hair? Not sure....but will stop using it because my hair looks like hay after each use. I have not used the mask nor the serum yet, but at this point, I will try to return everything to the salon and hopefully get a credit. I also feel the shampoo had stripped my colour. Going back to using Kérastase for Coloured Hair
Date published: 2019-01-04
Rated 1 out of 5 by from Not impressed at all I bought this shampoo as part of the whole new Extentioniste line as the promise to have longer hair in 3 months was exciting. Although the shampoo smells lovely, I have seen no change in my hair in terms of growing any longer than it is. The shampoo was expensive and I feel that it may also be stripping my colour as I don't think it is sulphate free. Don't recommend this and won't buy again.
Date published: 2018-12-31
  • y_2021, m_11, d_27, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.20
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_CA, sid_bain-extentioniste-shampoo, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_kerastase-en_ca
  • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
  • CLOUD, getReviews, 5ms
  • reviews, product
Orientation message
For the best experience, please turn your device