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Side by side

It's a 10 Clear Miracle Leave-In vs Kerastase Discipline Fluidissime Thermique Heat Protecting Spray

90% function match · 8 of the 10 functions we compared match Formula overlap 3%. It's a 10 Clear Miracle Leave-In and Kerastase Discipline Fluidissime Thermique Heat Protecting Spray share 2 ingredients among each other's most prominent.

These sit in different steps of a routine — It's a 10 Clear Miracle Leave-In is a leave-in and Kerastase Discipline Fluidissime Thermique Heat Protecting Spray is a heat protectant. Comparing their formulas is fair; treating one as a replacement for the other is not.

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.

  • Clear Miracle Leave-In — heat styling
  • Discipline Fluidissime Thermique Heat Protecting Spray — 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
It's a 10 Clear Miracle Leave-In — 4 oz container It's a 10

Clear Miracle Leave-In

  • Leave-in
  • Salon
  • Sulfate-free
  • Moisture-rich
Kerastase

Discipline Fluidissime Thermique Heat Protecting Spray

  • Heat protectant
  • Prestige
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$24.49 4 oz · $6.12/oz
$50 5.1 oz · $9.80/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 78% of the 553 leave-ins we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 94% of the 553 heat protectants we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Straight–Curly Smoothing and thermal products span straight through curly hair. Your hair
Moisture level Differs
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Moderate Humectants in the working part of the formula. Your hair
Oils and butters Same
None No oils or butters in the list. 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 Same
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. 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 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
Claimed, no temperature given Sold as a heat protectant; no temperature is stated. Your hair
High The brand states a protection temperature — a label claim, not a measurement. Your hair
Fast-drying alcohol Same
—
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
  • 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
  • Curl definitionfilm formers hold a clump together
  • Heat stylingthe brand states protection to 450°F
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • 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
  • Dry or very humid airwhere heavy humectants work against you
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • 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
Leave-inspray
Heat protectantspray
Where to buy
Brand website · Target
Brand website
Free of
  • sulfate-free
  • sulfate-free
Cruelty-free
—
Not cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
Heat protection
Claimed, no temperature stated
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

IngredientClear Miracle Leave-InDiscipline Fluidissime Thermique Heat Protecting Spray
Water
Neutral
#1Leading
#1Leading
Fragrance
Fragrance
#4Below the 1% line
#27Below the 1% line
Phenoxyethanol
Stabilizes
#6Below the 1% line
#10Below the 1% line
Glycerin
Moisturizes
#13Below the 1% line
#7Supporting

What only one of them carries

Clear Miracle Leave-In

Discipline Fluidissime Thermique Heat Protecting Spray

Full ingredient list — Clear Miracle Leave-In (31)
Full ingredient list — Discipline Fluidissime Thermique Heat Protecting Spray (27)

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.

VerdictsClear Miracle Leave-InDiscipline Fluidissime Thermique Heat Protecting Spray
Supported
5
3
Partly supported
5
1
Stated by brand
0
0
Potential conflict
0
0

Clear Miracle Leave-In

  • Thermal ProtectorPartly supportedSold for hot tools; untestable here.
  • Helps prevent split endsPartly supportedSupports the surface, not a treatment.
  • Restores shineSupportedReflects light for visible shine.
  • Nourishes hairSupportedHelps hair feel hydrated.
  • Detangles instantlySupportedEasier detangling, less breakage.
  • Color safeSupportedLess fade per wash.
  • Helps reduce frizzSupportedSmoother strands, less frizz.
  • Helps reduce breakagePartly supportedSupports the surface, not a treatment.
  • Enhances natural bodyPartly supportedNeutral on lift.
  • LightweightPartly supportedDepends how fine your hair is.

Discipline Fluidissime Thermique Heat Protecting Spray

  • Anti-frizz protection for up to 72 hoursSupportedSmoother strands, less frizz.
  • Heat protectant with 450F thermo-protectionPartly supportedSold for hot tools; untestable here.
  • Illuminates shiny hairSupportedReflects light for visible shine.
  • Multi-tasking leave-in product that protects against heat damage, improves shine and suppleness, and adds movementSupportedReflects light for visible shine.

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 a light feel, frizz control, and shine. Kerastase Discipline Fluidissime Thermique Heat Protecting Spray draws complaints about dryness and dullness.

Clear Miracle Leave-In

Lightweight/weightless formula that detangles instantly without greasiness or buildup

Delivers a dramatic, near-instant transformation ('IS a miracle', hair transformed in one use)

Reduces frizz and adds body/shine while easing styling

Discipline Fluidissime Thermique Heat Protecting Spray

Users report frizz and flyaway control in humidity with a pleasant scent.

Bayareasandra and Angel05, official reviews

Fine and frizz-prone users report soft smooth manageable hair, shine, and heat protection without grease.

MrsJen, current official verified review

A reviewer reports dryness and a dull film after several uses.

Marilyn NYC, official review

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.

$6.12/oz vs $9.80/oz — Kerastase Discipline Fluidissime Thermique Heat Protecting Spray costs about 1.6× more per ounce than It's a 10 Clear Miracle Leave-In.

Clear Miracle Leave-In

Against 553 leave-ins with a computable unit price.

Discipline Fluidissime Thermique Heat Protecting Spray

Against 553 heat protectants with a computable unit price.

Value readClear Miracle Leave-InDiscipline Fluidissime Thermique Heat Protecting Spray
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
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.

Clear Miracle Leave-In vs Kids Taming SprayPaul Mitchell · 90% function matchDiscipline Fluidissime Thermique Heat Protecting Spray vs Chroma Absolu Serum Chroma ThermiqueKerastase · 95% function matchClear Miracle Leave-In vs Dream Cocktail Carb-Infused Leave-in TreatmentColor Wow · 90% function matchDiscipline Fluidissime Thermique Heat Protecting Spray vs Daily ProvisionKenra · 95% function matchClear Miracle Leave-In vs Half & Half Hydrating Silkening Hair MilkAunt Jackie's · 90% function matchDiscipline Fluidissime Thermique Heat Protecting Spray vs Dream Cocktail Kale-Infused Leave-in TreatmentColor Wow · 95% function matchClear Miracle Leave-In vs All Eyes On Me 10-in-1 Hair Perfector Detangling Leave-inNot Your Mother's · 90% function matchDiscipline Fluidissime Thermique Heat Protecting Spray vs ProVitamin Leave-In ConditionerAphogee · 93% function match

Clear Miracle Leave-In · Discipline Fluidissime Thermique Heat Protecting Spray · All leave-ins 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.
  • 8 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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