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Side by side

Kerastase Résistance Extentioniste Thermique vs Kerastase Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair

67% function match · 5 of the 10 functions we compared match Formula overlap 23%. Kerastase Résistance Extentioniste Thermique and Kerastase Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair share 4 ingredients among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • Résistance Extentioniste Thermique — protein-sensitive hair
  • Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair — heat styling

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
Kerastase

Résistance Extentioniste Thermique

  • Heat protectant
  • Prestige
  • Sulfate-free
  • Protein-free
Kerastase

Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair

  • Heat protectant
  • Prestige
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$52 5.1 oz · $10.20/oz
$50 5.1 oz · $9.80/oz
Value / price positioning
Priced above most heat protectants $$$$$ Prestige tier · costs more than 91% of the 223 heat protectants we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 93% of the 1359 heat protectants we’ve priced
Best for hair types
Straight–Curly Smoothing and thermal products span straight through curly hair. Your hair
Straight–Curly Smoothing and thermal products span straight through curly hair. Your hair
Moisture level Differs
Low Humectants appear, but low enough to be a minor part. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Oils and butters Same
None No oils or butters in the list. Your hair
—
Slip / detangling Differs
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Moderate Conditioning agents are present, lower in the list. Your hair
Weight on hair Differs
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
Fragrance
Present Fragrance is listed; it sits below the working ingredients. Your hair
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Differs
None No protein or amino acids in the list. Your hair
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Silicone / wax buildup Same
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
Moderate Your hair
Heat protection
—
High The brand states a protection temperature — a label claim, not a measurement. Your hair
Fast-drying alcohol Differs
Present Fast-drying alcohol is present — it speeds drying and can read dry on the hair. Your hair
None No fast-drying alcohol in the list. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • A wide range of haira middle-of-the-range weight
  • Heat stylingthe brand states protection to 450°F
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Fine hairthat flattens under most products
  • Porous, damaged hairceramides are in the list
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Very dry or damaged hairit contains fast-drying alcohol
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Dry or very humid airwhere heavy humectants work against you
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Heat protectantcream
Heat protectantcream
Where to buy
Salons · Specialty beauty
Sephora
Free of
  • sulfate-free
  • protein-free
  • sulfate-free
Cruelty-free
Not cruelty-free · PETA-listed
Not cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
Heat protection
—
up to 450°F

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientRésistance Extentioniste ThermiqueResistance Heat Protectant Leave-In Styling Cream for Damaged Hair
Water
Neutral
#1Leading
#1Leading
Triethanolamine
pH balancer
#4Below the 1% line
#5Below the 1% line
Amodimethicone
Buildup
#5Below the 1% line
#15Below the 1% line
Phenoxyethanol
Stabilizes
#6Below the 1% line
#6Below the 1% line
Carbomer
Holds
#7Below the 1% line
#8Below the 1% line
Polyquaternium-4
Detangles
#8Below the 1% line
#10Below the 1% line
Linalool
Fragrance
#17Below the 1% line
#23Below the 1% line
Limonene
Fragrance
#21Below the 1% line
#14Below the 1% line

What only one of them carries

Résistance Extentioniste Thermique

Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair

Full ingredient list — Résistance Extentioniste Thermique (26)
Full ingredient list — Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair (31)

Claims check

What each brand says, against what each formula shows

Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.

VerdictsRésistance Extentioniste ThermiqueResistance Heat Protectant Leave-In Styling Cream for Damaged Hair
Supported
0
1
Partly supported
0
3
Stated by brand
3
0
Potential conflict
0
0

Résistance Extentioniste Thermique

  • 90% less breakage after one applicationStated by brandOnly the brand’s testing shows this.
  • Protects against heat up to 450°FStated by brandOnly lab testing can show this.
  • Reinforces and seals lengths and endsStated by brandCan’t be confirmed from label.

Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair

  • Strengthening leave-in creamPartly supportedSupports the surface, not a treatment.
  • Prevents breakage, restores damaged hair, smooths frizz, and enhances shinePartly supportedSupports the surface, not a treatment.
  • Seamless detangling and frizz reductionSupportedEasier detangling, less breakage.
  • Protects against heat up to 450FPartly supportedSold for hot tools; untestable here.

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Résistance Extentioniste Thermique

No review themes researched for this product yet.

Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair

Leaves hair soft, shiny, and less frizzy

Walmart reviewers

Protects during blow-drying while keeping fine hair light

Walmart reviewers

A minority report drying smell or poor value

Walmart reviewer

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$9.80/oz vs $10.20/oz — within about the same cost per ounce.

$0.42/oz median $5.13/oz $76.00/oz $10.20/oz Résistance Extentioniste T $9.80/oz Resistance Heat Protectant

Every mark sits on one distribution because these are compared against the same set: 223 heat protectants with a computable unit price.

Value readRésistance Extentioniste ThermiqueResistance Heat Protectant Leave-In Styling Cream for Damaged Hair
Label
Priced above most heat protectantsCosts more per ounce than most heat protectants; nothing in our library matches it closely for less.
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

Résistance Extentioniste Thermique vs Resistance Heat Protecting Leave-In Treatment for Split EndsKerastase · 100% function matchResistance Heat Protectant Leave-In Styling Cream for Damaged Hair vs Resistance Ciment ThermiqueKerastase · 100% function matchRésistance Extentioniste Thermique vs A Curl Can Dream Scrunch N' Go Defining SprayMatrix · 89% function matchResistance Heat Protectant Leave-In Styling Cream for Damaged Hair vs Kenra Platinum Texturizing Mist 6Kenra Professional · 93% function matchRésistance Extentioniste Thermique vs Premiere Filler Fondamental Repairing Anti-Frizz SerumKerastase · 86% function matchResistance Heat Protectant Leave-In Styling Cream for Damaged Hair vs Platinum Texturizing Mist 6Kenra Professional · 93% function matchRésistance Extentioniste Thermique vs Glow Mania Glow Sealing Leave-In ConditionerMatrix · 85% function matchResistance Heat Protectant Leave-In Styling Cream for Damaged Hair vs Hair Milk Refresher SprayCarol's Daughter · 92% function match

Résistance Extentioniste Thermique · Resistance Heat Protectant Leave-In Styling Cream for Damaged Hair · All heat protectants in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
  • The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
  • 9 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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