Kerastase 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.
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.
| Capacity | 150ml |
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FAQ
How long does the protection last after application?
The thermo-protection lasts up to 8 hours when used as an overnight serum, and provides heat protection up to 230°C during styling.
Can this product be used on colored hair?
Yes, this product is suitable for colored hair as it helps protect against heat damage without affecting color.
Does it help prevent split ends?
Yes, the formula seals the hair fiber and reduces breakage by 93% after one application, helping to prevent split ends.

Jennifer Edmunds –
I use this overnight before blow-drying and my hair feels stronger and smoother. It really reduces frizz and makes styling easier. After a few weeks, I noticed less breakage at the ends.
Victoria Duncan –
My dry, damaged hair has improved significantly. The heat protection is effective, and my hair stays intact even when I use high heat on the dryer.
Sonia Wilkins –
Works well for daily use. The texture is light and doesn’t weigh down the hair. I apply it at night and wake up to softer, more manageable strands.
Neil Piper –
After using it regularly, my hair has grown longer without breaking. The reduction in split ends is noticeable, especially on the ends of my strands.
Katherine Metcalfe –
I applied it before blow-drying and felt a difference in how strong my hair felt. It’s a great addition to my heat styling routine.