Résistance Thermique Extentioniste

Protection for long, precious lengths. Kérastase Résistance Thermique Extentioniste is a heat-protecting blow-dry gel-cream for long hair. Creatine R, taurine and Glaçage Thermo-Ceal seal lengths and split ends, reinforce the fibre and protect from heat up to 230°C (450°F). 150 ml. A Curious stylist favourite.

Key Ingredients, Explained

• Creatine R: An exclusive complex of creatine, an amino acid that reinforces the hair's internal structure, and ceramide, which helps recover the hair surface.
• Taurine: An amino acid with a protective effect on the hair that helps keep the scalp environment healthy and stimulated.
• Glaçage Thermo-Ceal: A heat-activated sealing technology that helps resurface the fibre and seal split ends.

What It Does

• Heat protection up to 230°C (450°F).
• 90% less breakage after one application.*
• Seals lengths and split ends.
• Leaves hair smooth, soft and shiny.

*Instrumental test.

Why We Love It

• Smooth gel-cream that detangles.
• Strength and heat protection in one.
• Finishes the Extentioniste routine.

Best For

Long hair with damaged lengths and ends that is blow-dried or heat styled.

How to Use

1. Apply a quarter-sized amount to damp hair.
2. Work through mid-lengths and ends.
3. Do not rinse. Blow-dry as usual.

Curious Stylist Tip

Use it every time you blow-dry, even on a quick rough-dry. Heat damage adds up, and that's what holds long hair back.

Your Extentioniste Ritual

1. Cleanse: Bain Extentioniste.
2. Condition: Fondant Extentioniste.
3. Scalp: Sérum Extentioniste once or twice a week.
4. Protect: Thermique Extentioniste before blow-drying.

The Scent

A tasty opening of fresh, biting notes, a sweet, fruity heart, and a delicate, musky floral base.

Ingredients

Aqua / Water, Isopropyl Myristate, Dimethicone, Triethanolamine, Amodimethicone, Phenoxyethanol, Carbomer, Polyquaternium-4, Potato Starch Modified, Hydroxypropyl Guar, Behentrimonium Chloride, Trideceth-6, Amyl Cinnamal, Hexyl Cinnamal, Isopropyl Alcohol, Benzyl Alcohol, Linalool, Hydroxycitronellal, Cetrimonium Chloride, Citronellol, Limonene, Benzyl Cinnamate, Creatine, 2-Oleamido-1,3-Octadecanediol, Taurine, Parfum / Fragrance.

Formulas can change, so check the packaging for the current list.

Frequently Asked Questions

Is it a heat protectant?

Yes. It protects up to 230°C (450°F).

Do I rinse it out?

No. It's a leave-in.

Is it only for blow-drying?

It's designed as a blow-dry primer, so it works best applied to damp hair before heat styling.

Where can I buy Kérastase Résistance in Canada?

Online at rucurious.ca, with free shipping across Canada on orders over $65, or in person at Curious salons across Calgary, Cochrane and Rocky View, Alberta. Explore the full Kérastase collection.

Is this authentic Kérastase?

Yes. Curious is an authorized Kérastase retailer, and every product is sourced directly from the manufacturer.