Kerastase Resistance Bain Extentioniste

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Length Strengthening Shampoo

Kerastase Resistance Bain Extentioniste was created to strengthen slow growing damaged lengths. This fortifying shampoo consist of powerful amino acids and ceramides to strengthen the internal structure of the hair and improve elasticity from root to tip. Kerastase Bain Extentioniste's silky formula gently removes build-up, impurities and excess oil from the scalp to leaving the hair well protected, fresh, strong with visibly healthy look and natural shine.


  • For weakened and damaged lengths
  • Enriched with Creatine R, Ceramides and Taurine
  • Penetrates deep to reinforce the internal structure of the hair fiber
  • Provides surface recovery, assuring beautiful hair fiber as they smooth and soften
  • Gently perfumes the hair for a sensorial cleanse
  • Cruelty-free/No Animal Testing


Apply a quarter size amount of Bain Extentioniste shampoo to wet hair. Massage through lengths and ends until lathered and rinse thoroughly.


Aqua / Water, Sodium Laureth Sulfate, Coco-Betaine, Taurine, Cocamide Mipa, Sodium Chloride, Amodimethicone, Laureth-5 Carboxylic Acid, Ppg-5-Ceteth-20, Sodium Benzoate, Sodium Hydroxide, Citric Acid, Polyquaternium-10, Peg-55 Propylene Glycol Oleate, Propylene Glycol, Peg-60 Hydrogenated Castor Oil, Salicylic Acid, Amyl Cinnamal, Hexyl Cinnamal, Benzyl Alcohol, Linalool, Hydroxycitronellal, Citronellol, Limonene, Creatine, 2-Oleamido-1,3-Octadecanediol, Benzyl Cinnamate, Sodium Acetate, Isopropyl Alcohol, Parfum / Fragrance. 

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  • 5
    My favorite shampoo

    Posted by Evelyn on 19th Jan 2021

    I've been growing my hair for several years now, but got frustrated at how it looked without regularly trims – and that kept it from growing fast enough. This shampoo stimulates growth, yet leaves my hair looking clean and smelling great. It gets rid of product build-up too, which I love. Just a small amount does the trick and my hair is bouncy and beautiful again.

  • 4
    Good, so far.

    Posted by Sara Ali. on 19th Oct 2018

    Just recently purchased this product. I've been using it for about a week and I love the clean, fresh feel as well as the scent the shampoo leaves on my hair. It has a nice lather and it rinses out easily which is a great thing. I haven't had a chance to see any of the length strengthening properties take effect, but I have my hopes that it will be there and noticeable soon since the shampoo is recommended for healthy lengths and protect hair against damage. So, far it seems like e a very good product, but I would need to use it for an extended period to judge the long-term results. Also, I received free samples with my order, so I can get to my sister, thanks VB!