Length strengthening shampoo for slow growing, damaged lengths.


  • strengthens hair and boosts strong hair growth starting at the roots
  • the combination of Creatine and amino acids help hair grow in length and strength
  • rebuilds the internal structure of the hair
  • provides protection throughout the growth

Together with the Fondant, Masque and Serum Extenioniste, the Resistance Extentioniste line by Kerastase promotes hair growth for damaged hair. 

How to use:

Apply a quarter-size amount of our hair strengthening shampoo to wet hair.
Massage and Lather the hair strengthening treatment through hair.
Rinse the shampoo completely out of hair, avoiding too much friction.
When finished, pair with Fondant Extentioniste to help grow hair out.


  • 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


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