Price: $64.00
(as of Mar 05, 2026 13:38:27 UTC – Details)
Product description
Strengthening Care for Damaged Hair
Resistance Extentioniste
Rebuild weak and damaged hair lengths while restoring the hair fiber. Resistance strengthens the hair to help repair the effects of heat styling and prevent hair breakage in over-processed hair
Expert Formulas
Powered by Creatine R & Ceramides
Creatine R: Reinforce hair fiber structureCeramides: Strengthen hair, add shine & moisture 
Fusio-Dose
Professional In-Salon Treatment
Instant Transformation, Infinite Possibilities.
In-Salon Service
Your appointment
Make an appointment in your Kérastase salon for a personalized hair diagnosis.
1 Discover
2 Fusio-Dose
3 In-Salon Service
Discover Resistance Force Architecte
Extentioniste Shampoo
Supports healthy hair lengthsProtects hair fiber from external aggressorsStimulates scalp
Extentioniste Conditioner
Supports healthy hair lengthsEasily detangles hairSeals split ends
Extentioniste Mask
Strengthen & supports healthy hair lengthsEasily detangles hairSeals split ends
Extentioniste Thermique Blow Dry Primer
Less hair breakage from blow dryingSupports healthy hair lengths & seals split endsHeat protectant with 450°F thermo-protection
Extentioniste Scalp & Hair Serum
Supports healthy hair lengthsSoothing texture for itchy scalpEssential nutrition for healthy hair
What is the difference between Resistance Force Architecte, Extensioniste, and Therapiste?
The main difference between these ranges is the level and type of hair damage. Resistance Extentioniste is ideal for slow growing, damaged hair lengths
What is the key ingredient in the Resistance Extentioniste range?
The key ingredient is Creatine R, an exclusive complex composed of Creatine an amino acid that reinforces the internal structure of the hair fiber.
Is this product safe for color-treated hair?
Yes, this product is safe for color-treated hair
Explore The Resistance Extentioniste Collection
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Customer Reviews
4.6 out of 5 stars 6,558
4.5 out of 5 stars 3,468
4.6 out of 5 stars 2,903
4.7 out of 5 stars 1,525
4.4 out of 5 stars 2,156
Price
$46.00$46.00
$50.00$50.00
$68.00$68.00
$50.00$50.00
$64.00$64.00
Hair Type
Weakened hair seeking length
Weakened hair seeking length
Weakened hair seeking length
Weakened hair seeking length
Weakened hair seeking length
Purpose
Length strengthening shampoo
Length conditioner
Length strengthening mask
Length strengthening primer
Energizing leave-in hair serum
Benefit
Support lengths, protect fiber
Support lengths, detangle
Support lengths, detangle
Support length, seal split end
Support lengths, soothe scalp
Key Ingredient
Creatine R
Creatine R
Gluco Peptide
Creatine R
Creatine R
Usage
Can be used daily
Can be used daily
Few times a week, or as needed
Use before blow dry or styling
At least 3 times a week
Is Discontinued By Manufacturer : No
Product Dimensions : 9 x 6 x 3 inches; 1.76 ounces
Item model number : 3474636636341
Manufacturer : Kerastase
ASIN : B07D58FSWY
Best Sellers Rank: #50,792 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #143 in Hair Styling Serums
Customer Reviews: 4.4 4.4 out of 5 stars (2,156) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Extentioniste Scalp Serum: A concentrated hair treatment designed to achieve beautiful lengths in all hair types, especially damaged & sensitized hair.
Benefit: Enriched with Ceramides, it repairs fibers from within to improve elasticity, while reducing split ends and the risk of breakage. A key step to reinforce roots and promote a healthy scalp
Additional Benefits: Non-greasy formula is perfect to boost and activate the growth of healthy hair to achieve strong long hair with healed surface damage. Additionally purifies and protects scalp
Suggested Use: Apply 3 pipettes of serum to scalp once or twice per week. Massage the serum into the root and scalp as you work through each section, then proceed to styling as per your usual routine
Resistance Collection: For weakened hair seeking healthy lengths use with Extentioniste Shampoo and Conditioner. Together products will create strengthened hair with reduced breakage and sealed split ends