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Résistance Thermique Extentioniste

An overnight leave-in serum that intensely nourishes dry hair over 8 hours for softer and easier hair to style the next morning.
Kerastase Extensioniste thermique Resistance Thermal Protection for strong lengths product image

Résistance Thermique Extentioniste

An overnight leave-in serum that intensely nourishes dry hair over 8 hours for softer and easier hair to style the next morning.

PDP Section Product Benefits

Product Benefits

A thermo-protecting blowdry and heat-styling cream designed to seal lengths and split ends. Its combination of Glaçage Thermo-Ceal + Creatine R + Taurine instantly seals and resurfaces the hair fiber, reducing the 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.

  • 8H of overnight nourishment, in combination with Bain Satin 2 + Masquintense
  • Provides easier detangling, avoiding pillow friction
  • Hair fiber is soft to the touch
  • Increases manageability of normal to coarse hair
  • Hydrates without weighing down on fine hair
  • Provides curly hair with definition


PDP Section Ingredients

Key Ingredients





PDP Section How To Apply Video

How to Use

Use 2 to 4 pumps, depending on the length and thickness of the hair. Apply on lengths and ends. For application on wet hair, towel-dry hair before applying. Style hair as desired overnight. Leave in. No rinse necessary. Reapply as needed on dry hair for an added boost of overnight nutrition.
This is the perfect product to hydrate extremely dry hair. Treat the very ends of your hair with the incredible night serum and watch your hair come alive!

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PDP Section Routine

Complete Your Routine

Complete your hair care routine with cleanse, treat, prime & night essentials.
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