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Kérastase Sérum Extentionniste

Serum Extentioniste is a highly concentrated scalp and hair treatment for hair seeking healthy lengths. Enriched with Ceramides that stimulate the growth of healthy and strong hair follicles while adding smoothness and softness to hair.


  • Fortifies hair for reduced breakage.
  • Purifies and protects the scalp.
  • Restores the cuticle of the hair fibre.
  • Designed to encourage healthy hair growth while improving hair density and substance.
  • Deploys the growth potential of the follicles.
  • Stimulates and promotes a healthy scalp.