Strong lengths, Repair, Anti-Damage

Serum Extentioniste

A highly concentrated serum with key active ingredients that stimulate the growth of strong healthy hair follicles. This energizing leave-in treatment is a key step to reinforce roots and promote a healthy scalp environment...  Read more

50ml

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Apply a maximum of 3 pipettes of Sérum Extentioniste along key sections of the scalp, once or twice a week. Using the pads of the fingers, work the Sérum into the scalp, using circular motions.

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Extentioniste Before After Kérastase
  • Purifies & protects the scalp
  • Restores the fiber's cuticule
  • Deploys the growth potential of the follicles
  • Stimulates and promotes a healthy scalp 
Serum Extentioniste Resistance Ingredients Kérastase

Key Ingredients

Ceramides that act on superficial damage level- ideal for root area fiber - and helps restoring the fiber’s cuticle to protect the fiber as it grows.

Full Ingredients List

Aqua / Water - Polyquaternium-37 - Paraffinum Liquidum /Mineral Oil - Amodimethicone - Polysorbate 20 - Quaternium-87 - Stearyl Alcohol - Menthoxypropanediol - Behentrimonium Chloride - Safflower Glucoside - Maltodextrin - Propylene Glycol - Candelilla Cera / Candelilla Wax - Ppg-1 Trideceth-6 - Propanediol - Chlorhexidine Digluconate - Isopropyl Alcohol - Trideceth-6 - Acrylates Copolymer - Sorbitan Oleate - Polyquaternium-11 - Rose Extract - 2-Oleamido-1,3-Octadecanediol - Cetrimonium Chloride - Camellia Sinensis Leaf Extract - Xanthan Gum - Tocopherol - Bht - Sodium Citrate - Parfum / Fragrance


* Illustration of the contemplated results obtained after applying the product Résistance Bain Extensioniste, Resistance Fondant Extensioniste, Resistance Serum Extensioniste

Extentioniste Routine

The Extentioniste routine targets roots, lengths and ends. It stimulates the scalp, then gently detangles lengths while reinforcing and finally sealing ends for hair that is as full and strong at the tips as it is at the root. Finish with the thermique and your hair is fortified with no split ends and no breakage.

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In Salon Services

Resistance-Extentioniste: The restorative treatment

As with most training programs, working with a coach to achieve your goals is the extra push needed to achieve visible results and keep you on track. The Extentioniste long hair-training program is a salon-exclusive service that will instantly reduce split ends by 78% and eliminate breakage up to 99% after just one application. By treating hair from root to tip, it allows hair to reach up to 4cm in 3 months with hair that is in optimal health throughout the lengths, allowing you to reach your long hair goals. Using a skincare-inspired layering technique, it pairs two professional-grade caring agents to foster a stimulated scalp environment to naturally strengthen the fiber starting at the root, then recover and reinforce hair along the lengths and ends.

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