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Kérastase Résistance Thermique Extentioniste

Kérastase Résistance Thermique Extentioniste

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*leave in cream with heat protection


A thermo-protecting blowdry and heat-styling cream designed to seal lengths and split ends. Instantly seals and resurfaces the hair fibre  reducing breakage by 93% after one application. This smooth gel cream protects the hair from heat up to 230°C to reduce breakage. Hair is strong, resistant and can grow longer while remaining healthy. Designed to boost beautiful healthy lengths by helping to reinforce from the inside, improve manageability, facilitate detangling sealing split ends and leaving strands shiny!


Creatine R + Ceramide + Lipids an amino acid that penetrates deep to reinforce the internal structure of the hair fibre while lipids are responsible for surface recovery

Ceramides provide surface recovery, assuring beautiful hair fibre as they smooth and soften

Taurine, an amino acid with a protective effect on the hair fibre to help ensure visibly healthy and stimulated scalp environment


Apply a walnut-sized amount to towel-dried hair and then style using a hairdryer or heat styling appliance. Leave-in.

Pro tip: In the Kérastase Résistance collection we have 3 leave-in creams for damage. Here is the simple breakdown to know which one is best for what type of damage:

  • Ciment Thermique: for damage from heat/thermal tools
  • Extentioniste Thermique: for damage from split ends
  • Serum Therapiste: for damage from chemical/bleach


Kérastase Elixir Ultime Classic Hair Oil. We love to cocktail these together in palm of hands mix a drop of oil with the cream!