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Side by side

Kerastase Genesis Defense Thermique Blow Dry Primer vs Kerastase Nutritive Lotion Thermique Sublimatrice

57% function match · 5 of the 10 functions we compared match Formula overlap 35%. Kerastase Genesis Defense Thermique Blow Dry Primer and Kerastase Nutritive Lotion Thermique Sublimatrice 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.

  • Genesis Defense Thermique Blow Dry Primer — heat styling
  • Nutritive Lotion Thermique Sublimatrice — maximum slip

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 Genesis Defense Thermique Blow Dry Primer — 5.1 oz container Kerastase

Genesis Defense Thermique Blow Dry Primer

  • Heat protectant
  • Prestige
  • Sulfate-free
  • Moisture-rich
Kerastase

Nutritive Lotion Thermique Sublimatrice

  • Heat protectant
  • Salon
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$50 5.1 oz · $9.80/oz
$39.43 5.1 oz · $7.73/oz
Value / price positioning
Same job for less elsewhere $$$$$ Prestige tier · costs more than 94% of the 553 heat protectants we’ve priced
Priced above most heat protectants $$$$$ Salon tier · costs more than 77% of the 223 heat protectants we’ve priced
Best for hair types
Curly–Coily A heavy formula: coarse, curlier strands carry it without flattening. Your hair
Straight–Curly Smoothing and thermal products span straight through curly hair. Your hair
Moisture level Same
Moderate Humectants in the working part of the formula. Your hair
Moderate Humectants in the working part of the formula. Your hair
Heat protection
Moderate Sold as a heat protectant; no temperature is stated. Your hair
—
Slip / detangling Same
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Weight on hair Differs
Rich Heavy butters and waxes in the first eight ingredients. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse 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 Same
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Silicone / wax buildup Differs
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
Moderate Your hair
Low Your hair
Oils and butters Differs
—
Low Oils are present, but low enough to be a finishing touch. Your hair
Fast-drying alcohol Same
Present Fast-drying alcohol is present — it speeds drying and can read dry on the hair. Your hair
Present Fast-drying alcohol is present — it speeds drying and can read dry on the hair. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Heat stylingthe brand positions this as a heat protectant
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Coarse or dry hairthat absorbs everything you give it
  • Maximum slipfor hair that tangles the moment it is wet
  • Silicone-free routinesno silicones appear in the list
  • Stretching wash daysnothing here needs a detergent to remove
  • A wide range of haira middle-of-the-range weight
Why you might skip it
  • Scents bother youthis product carries a strong scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Oily scalp or fine hairthat gets weighed down
  • Scents bother youthis product carries a scent
  • Very dry or damaged hairit contains fast-drying alcohol
  • Vegan and cruelty-freeour record does not support both claims here
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 protectantspray
Heat protectantspray
Where to buy
Brand website · Target · Amazon
Salons · Specialty beauty
Free of
  • sulfate-free
  • sulfate-free
  • silicone-free
  • curly-method compatible
Cruelty-free
Not cruelty-free · PETA-listed
Not cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
Heat protection
Claimed, no temperature stated
—

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

IngredientGenesis Defense Thermique Blow Dry PrimerNutritive Lotion Thermique Sublimatrice
Water
Neutral
#1Leading
#1Leading
Polyquaternium-37
Detangles
#4Supporting
#3Leading
Phenoxyethanol
Stabilizes
#5Below the 1% line
#35Below the 1% line
Propylene Glycol Dicaprylate/Dicaprate
Softens
#6Below the 1% line
#4Supporting
Limonene
Fragrance
#15Below the 1% line
#33Below the 1% line
Linalool
Fragrance
#19Below the 1% line
#19Below the 1% line
Isopropyl Alcohol
Drying
#20Below the 1% line
#21Below the 1% line
Citric Acid
pH balancer
#34Below the 1% line
#5Below the 1% line
Benzyl Salicylate
Fragrance
#24Below the 1% line
#23Below the 1% line

What only one of them carries

Genesis Defense Thermique Blow Dry Primer

Nutritive Lotion Thermique Sublimatrice

Full ingredient list — Genesis Defense Thermique Blow Dry Primer (37)
Full ingredient list — Nutritive Lotion Thermique Sublimatrice (36)

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.

VerdictsGenesis Defense Thermique Blow Dry PrimerNutritive Lotion Thermique Sublimatrice
Supported
1
0
Partly supported
2
0
Stated by brand
3
4
Potential conflict
0
0

Genesis Defense Thermique Blow Dry Primer

  • Lightweight leave-in spray to strengthen, heat protect, and prevent breakagePartly supportedSupports the surface, not a treatment.
  • 97% less hair fall due to breakage from brushingStated by brandOnly the brand’s testing shows this.
  • 89% more nourished hairStated by brandOnly the brand’s testing shows this.
  • 88% more smooth/conditionedStated by brandOnly the brand’s testing shows this.
  • Strengthens Hair Weakened from Brushing and Over-StylingPartly supportedSupports the surface, not a treatment.
  • Up to 24 Hours of Frizz ProtectionSupportedSmoother strands, less frizz.

Nutritive Lotion Thermique Sublimatrice

  • Provides 82% deep conditioningStated by brandOnly the brand’s testing shows this.
  • 98% less breakage vs non-conditioning shampooStated by brandOnly the brand’s testing shows this.
  • Heat protection up to 450°FStated by brandOnly lab testing can show this.
  • Speeds up drying performance by halfStated by brandCan’t be confirmed from label.

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.

Both praised for moisture, the scent, and frizz control. Kerastase Nutritive Lotion Thermique Sublimatrice draws complaints about weight and the price.

Genesis Defense Thermique Blow Dry Primer

Hair feels softer, more hydrated, and less frizzy after use

Adopted as a must-use step before blow drying or straightening

Pleasant, long-lasting scent; texture described as lightweight, not heavy or greasy

Frequently noted as expensive, though most say worth it for the results

Nutritive Lotion Thermique Sublimatrice

Several reviewers say a single use noticeably reduced frizz and made post-blow-dry hair feel smoother than usual

Target customers (98 ratings, 4.76/5 average)

Fine-haired reviewers describe the mist as lightweight and note it smells like a salon treatment

Target customers with fine hair

Some reviewers report hair looking limp and greasy within a day of repeated use

Target customers

A few reviewers feel the price is high relative to the improvement they noticed

Target customers

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.

$7.73/oz vs $9.80/oz — Kerastase Genesis Defense Thermique Blow Dry Primer costs about 1.3× more per ounce than Kerastase Nutritive Lotion Thermique Sublimatrice.

$0.01/oz median $2.46/oz $76.00/oz $9.80/oz Genesis Defense Thermique $7.73/oz Nutritive Lotion Thermique

Every mark sits on one distribution because these are compared against the same set: 553 heat protectants with a computable unit price.

Value readGenesis Defense Thermique Blow Dry PrimerNutritive Lotion Thermique Sublimatrice
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Priced above most heat protectantsCosts more per ounce than most heat protectants; nothing in our library matches it closely for less.

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.

Genesis Defense Thermique Blow Dry Primer vs Pureology Color Fanatic Multi-Tasking Leave-In Conditioner SprayPureology · 90% function matchNutritive Lotion Thermique Sublimatrice vs Sleek & Shine 10-in-1 Leave-In SprayGarnier Fructis · 79% function matchGenesis Defense Thermique Blow Dry Primer vs Bond Rx Leave-In TreatmentPaul Mitchell · 90% function matchNutritive Lotion Thermique Sublimatrice vs Argan Oil Conditions & Detangles Leave-In SprayHask · 76% function matchGenesis Defense Thermique Blow Dry Primer vs Blond Absolu Blonde Guard Hydrating Leave-In Conditioner Spray with Hyaluronic AcidKerastase · 88% function matchNutritive Lotion Thermique Sublimatrice vs Dream Lengths Frizz Killer Serum Leave-InL'Oreal Elvive · 76% function matchGenesis Defense Thermique Blow Dry Primer vs Shea Pro Leave-in MoisturizerAphogee · 87% function matchNutritive Lotion Thermique Sublimatrice vs Perfect hair Day Heat Styling SprayLiving Proof · 76% function match

Genesis Defense Thermique Blow Dry Primer · Nutritive Lotion Thermique Sublimatrice · 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.
  • 7 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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