Anti-frizz protection for up to 72 hours
Silicones or film formers smooth the cuticle, which is the usual mechanism.
- Amodimethicone
- Polyquaternium-37
- Phenyl Trimethicone
Supported
Smoother strands, less frizz.
Product image coming soon
Kerastase
Discipline Fluidissime Thermique Heat Protecting Spray
Heat protectant / Lotion, heat-protecting
- Heat protectant
- spray
- Also a leave-in
- Sulfate-free
- Moisture-rich
- Not cruelty-free · PETA-listed
Scent:
The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.
Manufacturer page: kerastase-usa.com
Personal fit
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Factor
Your profile
Fit
Best for hair types
Straight–Curly
Not in your profile
Moisture level
Moderate
Not in your profile
Heat protection
High
Not in your profile
Slip / detangling
High
Not in your profile
Weight on hair
Medium
Not in your profile
Fragrance
Present
Not in your profile
Protein
Minor
Not in your profile
Silicone / wax buildup
High
Not in your profile
Clarifying wash needed
Moderate
Not in your profile
Parabens / preservatives
None of these listed
Not in your profile
Show all 20 factors we check
The rest of what your plan weighs on this product.
Essential oils
None listed
Not in your profile
Fast-drying alcohol
None
Not in your profile
Vegan / cruelty-free
Not cruelty-free · PETA-listed
Not in your profile
Animal-derived ingredients
Not yet verified
Not in your profile
Heavy humectants
Not heavy
Not in your profile
Hard-water defence
None
Not in your profile
UV filter
None listed
Not in your profile
Ingredient list
27 ingredientsAbout average
Not in your profile
Price tier
Prestige
Not in your profile
Where to buy it
Brand websiteOne channel
Not in your profile
The consultation builds your hair profile, then reads every factor in this table against it — and tells you where this product fits, or what to use instead.
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Your avoid-list
Same job for less elsewhere
$9.80/oz at 5.1 oz — more than 94% of the 553 heat protectants , which mostly run $1.25–5.80/oz.
Great for
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
Very dry hairno fast-drying alcohol in the list
A wide range of haira middle-of-the-range weight
Maybe skip if
this product carries a scent
Curly-method routinesthese silicones need a detergent to remove
Vegan and cruelty-freeour record does not support both claims here
Tight budgetsit sits in the upper price tiers
Picking it up locallywe have it recorded in one channel only
What the formula actually does
Read from the label, not the marketing
Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.
Heat protection
Stated to 450°F
The brand states a protection temperature — a label claim, not a measurement.
Weight on the hair
Medium
Middle of the range — noticeable on fine hair, light on coarse hair.
Slip and detangling
High
Conditioning agents sit high in the list — this is a detangling formula.
Needs detergent to remove
Yes
Water-insoluble silicones or waxes: a detergent wash is what removes them.
Water-binding (humectants)
Moderate
Humectants in the working part of the formula.
Fast-drying alcohol
None
No fast-drying alcohol in the list.
Fragrance
Present
Fragrance is listed; it sits below the working ingredients.
from the formula
stated by the brand
reported by reviewers
Scale: 1 dot low · 5 dots high, within this product type.
Ingredients that matter
The ingredients that change a decision
The workhorse ingredients plus anything lower down that changes a decision. These chips name what an ingredient does — they are not safety scores, and no ingredient here is rated good or bad on its own.
| Ingredient | What it does | Why it matters | Chip |
|---|---|---|---|
| WaterAqua/Water | solvent | The base everything else is dissolved in | Neutral |
| Amodimethicone | silicone | Spreads heat across the strand | Buildup |
| Trideceth-5 | emulsifier | Keeps oil and water mixed | Stabilizes |
| PEG-40 Hydrogenated Castor Oil | solubilizer | Keeps oils dissolved in water | Stabilizes |
| Polyquaternium-37 | conditioning agent | Conditions and softens — this is what makes it comb through | Detangles |
| Propylene Glycol Dicaprylate/Dicaprate | light ester | Light slip without much weight | Softens |
| Glycerin | humectant | Pulls water into the hair | Moisturizes |
| Trideceth-10 | emulsifier | Keeps oil and water mixed | Stabilizes |
| Phenyl Trimethicone | silicone | A little heat-spreading smoothing | Buildup |
| Benzyl Salicylate | fragrance | The scent | Fragrance |
| Hydroxypropyltrimonium Hydrolyzed Wheat Protein | conditioning agent | Adds slip, lower in the list | Protein |
| Linalool | fragrance | The scent | Fragrance |
What the list leaves out, and what it carriesThe list carries no sulfates or drying alcohols. Fragrance is on the label. Water-insoluble silicones — needs a detergent wash to remove.
Full ingredient list (27)
US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Annotations keep three readings separate: the ingredient's general function, its role in this product type, and what its position can support.
-
1
Water
· Aqua/Water
General function
The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
- solvent
-
2
Amodimethicone
General function
A silicone modified to stick where hair is damaged, so it smooths selectively instead of coating everything. It resists rinsing more than plain dimethicone.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
International Journal of TrichologyMay suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairAmino-functional silicone carries a positive charge, so it binds where the cuticle is worn rather than coating evenly. Damaged areas get most of it.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- silicone
- conditioning agent
- film former
-
3
Trideceth-5
General function
A fatty alcohol with ethylene oxide added. The number is how many units: low numbers sit on the oil side of an emulsion, high numbers dissolve in water.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
- emulsifier
-
4
PEG-40 Hydrogenated Castor Oil
General function
A castor-oil derivative that dissolves fragrance and oils into water so the product stays clear and does not separate.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- solubilizer
- emulsifier
-
5
Polyquaternium-37
General function
A thickening polymer that gives creams and curl products their bounce and helps them cling to the strand.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitCurls or waves needing flexible holdCationic polymers hold a curl loosely and stay soft, which is why they turn up in definition products rather than firm-hold ones.
May suitFrizz-prone, damaged, or high-friction hairA cationic polymer stays on the hair through rinsing, which is what keeps static and combing friction down after the wash.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- conditioning agent
- film former
- polymer
- thickener
-
6
Propylene Glycol Dicaprylate/Dicaprate
General function
A light, dry-feeling ester that spreads other ingredients and softens without a greasy finish.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitFine or easily flattened hairA light emollient: it softens the surface with noticeably less weight than an oil or a butter.
May suitFrizz-prone, damaged, or high-friction hairSpreads thin and lowers friction between strands without the heaviness of a fixed oil.
- light ester
- emollient
-
7
Glycerin
General function
A small water-loving molecule that draws moisture into the hair and holds it there. It is the most common softening ingredient in conditioners and leave-ins.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
Scientific ReportsMay suitDry, coarse, or high-porosity hairHigh-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.
May suitVery dry or highly damaged hairBinds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.
DependsClimate-sensitive or frizz-prone hairWater moves both ways. Measured across concentrations, glycerin solutions give water up in some conditions and take it from the air in others. What it does for you depends on how much of it is there and on the air around it.
- humectant
-
8
Trideceth-10
General function
An emulsifier that keeps oils evenly dispersed.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- emulsifier
- solubilizer
-
9
Phenyl Trimethicone
General function
A high-refractive silicone used specifically for visible shine in serums and finishing oils.
Secondary ingredientLower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.
May suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairLays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
May not suitBuild-up-sensitive routinesDimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
- silicone
- emollient
- ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
10
Phenoxyethanol
- preservative
-
11
Arginine
General function
An amino acid that holds water and carries a positive charge, so it is drawn to damaged spots on the strand.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitVery dry or highly damaged hairAmino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
DependsClimate-sensitive or frizz-prone hairA humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.
DependsProtein-sensitive hairThe lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
- humectant
-
12
Glutamic Acid
General function
An amino acid used for moisture binding and to bring the formula to an acidic pH.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitVery dry or highly damaged hairAmino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
DependsFrizz-prone, damaged, or high-friction hairpH adjusters are how a formula is brought to a chosen acidity, and an acidic formula keeps the cuticle lying flatter than an alkaline one. Which way this one moves the pH depends on the formula, and the finished pH is not on the label.
DependsProtein-sensitive hairThe lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
- pH adjuster
-
13
PPG-1 Trideceth-6
- emulsifier
- solubilizer
-
14
Benzyl Salicylate
General function
A soft floral fragrance component listed separately as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
15
Serine
General function
One of the amino acids that make up hair protein, added for water binding.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitVery dry or highly damaged hairAmino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
DependsProtein-sensitive hairThe lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
-
16
Hydroxypropyltrimonium Hydrolyzed Wheat Protein
General function
A wheat protein given a positive charge so it sticks to damaged areas. It conditions and adds temporary strength in one ingredient.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitFrizz-prone, damaged, or high-friction hairA cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
May suitVery dry or highly damaged hairHydrolysed fragments are small enough to sit in the gaps of a worn cuticle for a wash or two, temporarily restoring stiffness and cutting breakage in combing.
- conditioning agent
- film former
- protein
- hydrolysed protein
-
17
Chlorhexidine Digluconate
- preservative
-
18
Benzyl Alcohol
- preservative
- solvent
-
19
Quaternium-87
General function
A plant-derived conditioning agent used for slip and static control.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitFrizz-prone, damaged, or high-friction hairA cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.
May suitVery dry or highly damaged hairThe class that does the detangling in a conditioner. It deposits lubrication where the cuticle is worn.
DependsBuild-up-sensitive routinesSubstantive by design. A routine with no detergent wash gives it nothing to leave with.
- conditioning agent
-
20
2-Oleamido-1,3-Octadecanediol
General function
A ceramide-like lipid used to reinforce the outer surface of damaged hair.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitFrizz-prone, damaged, or high-friction hairRestoring surface lipids lowers friction between strands, which is where much of the roughness in damaged hair comes from.
May suitProtein-sensitive hairA lipid, not a protein, despite sitting alongside proteins in most repair claims. It does not carry the stiffening effect.
May suitVery dry or highly damaged hairCeramides are the lipid class bleaching and heat deplete. Replacing them works on the surface layer rather than adding protein stiffness.
- ceramide
- emollient
-
21
Xylose
General function
A plant sugar used as a light humectant, often alongside other sugar-derived moisturisers.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitDry, coarse, or high-porosity hairHigh-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.
May suitVery dry or highly damaged hairBinds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.
DependsClimate-sensitive or frizz-prone hairA humectant moves water in whichever direction the air allows: it holds moisture in humid conditions and can pull it back out of hair in very dry ones.
- humectant
-
22
Linalool
General function
A floral fragrance component listed separately as a recognised contact allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
23
Alpha-Isomethyl Ionone
General function
A violet-like fragrance component named separately as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
24
Geraniol
General function
A rose-scented fragrance component, listed on its own because some people react to it.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
25
Citronellol
General function
A rose-like fragrance component named separately as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
26
Cinnamyl Alcohol
General function
A soft cinnamon-floral fragrance component named as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
27
Fragrance
· Parfum/Fragrance
General function
An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- declared fragrance
What the whole list adds up to
- 7 fragrances
- 6 named fragrance allergens
- 4 emulsifiers
- 3 film formers
- 3 solubilizers
- 3 conditioning agents
- 3 emollients
- 3 humectants
- 3 preservatives
- 3 amino acids
- 2 solvents
- 2 silicones
- 1 conditioning agent
- 1 polymer
Ingredient list captured 2026-08-23. Formulas change — check the package in your hand when an ingredient matters to you.
Price · 5.1 oz
Seen at
$50
Show the price ladder
Where we’ve seen it1 listing · 1 store
-
Prive Suite
$50.005.1 oz · $9.80/ozAug 23Lowest per oz
Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.
How we work this out
- 5.1 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
- Seen at $50 is the price we have observed for the 5.1 oz. We need three stores before we call a price commonly seen.
- About $13 is what heat protectants typically cost at this size. Too few of the products that do the same job carry a price for us to draw a good-value line.
Formula
10
Formula score
10 of 10
This is a complete heat protectant formula. It is also above the range for heat protectants per ounce, with 7 close matches selling for meaningfully less.
How the score is counted
- 7 products that do the same job cost less per ounce
- Costs more per ounce than 94% of the 553 heat protectants we’ve priced
- Covers 6 of the 6 things a heat protectant should do
- Reviewers mention 2 things they like about how it performs
- A film-forming heat spreaderSilicones or polymers that spread heat along the strand.3 pts
- A stated heat claimThe brand names the protection it claims.2 pts
- A light baseWater or a volatile carrier first, so it does not weigh hair down.2 pts
- A humectantBinds water into the hair.1 pt
- Slip for detanglingReduces the force it takes to comb wet hair.1 pt
- Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt
The formula score is completeness for the job: the share of the systems this product type is normally built around that we can find in this list, weighted. It is not efficacy, not quality, and it never compares across product types.
Does the same job, for less
Same derived functions — what it cleans, conditions, coats or holds — at a lower cost per ounce. Scent, texture and where you buy it can still differ.
KenraLighter feel
Daily Provision
$2.25/oz $7.55/oz less
- Heat protect
- Lightweight
- Alcohol-free
- Function
- Also
Color WowClose function
Dream Cocktail Kale-Infused Leave-in Treatment
$5.69/oz $4.11/oz less
- Heat protect
- Protein-free
- Alcohol-free
- Function
- Also
AphogeeLowest cost per oz
ProVitamin Leave-In Conditioner
$1.03/oz $8.77/oz less
- Budget
- Function
- Also
See more alternatives in the product library
These are functional neighbours, not personal recommendations — they are close on formula, not chosen for anyone. Get the one that fits your hair, routine, and budget
Final decision
Should you buy it?
Similar results available for lessBest user
People who blow-dry or flat-iron, looking for heat protection and real detangling slip
Biggest tradeoff
Less suited to anyone sensitive to fragrance, curly-method routines, or vegan and cruelty-free shopping
Best alternative if not
Consider Kenra Daily Provision, for similar results at a lower price
We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.
Claims check
What the brand says, against what the formula shows
Claims are quoted from the brand. We only mark one supported, partly supported, or conflicting when the ingredient list actually speaks to it; everything else stays "stated by the brand", which is not a criticism — most claims simply cannot be read off a label.
3
SupportedBacked by ingredients
1
Partly supportedSome supporting logic
0
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Heat protectant with 450F thermo-protection
Our library captures this as a heat protectant, but thermal protection is measured in a lab, not read off a list.
- Amodimethicone
- Polyquaternium-37
- Phenyl Trimethicone
Partly supported
Sold for hot tools; untestable here.
Illuminates shiny hair
The formula carries a recognised shine system — silicone, oil, or light ester.
- Amodimethicone
- Propylene Glycol Dicaprylate/Dicaprate
- Phenyl Trimethicone
Supported
Reflects light for visible shine.
Multi-tasking leave-in product that protects against heat damage, improves shine and suppleness, and adds movement
The formula carries a recognised shine system — silicone, oil, or light ester.
- Amodimethicone
- Propylene Glycol Dicaprylate/Dicaprate
- Phenyl Trimethicone
Supported
Reflects light for visible shine.
How to read this
We look at the first 10–15 ingredients and what they do in a formula — not marketing. If the list doesn't speak to a claim, we don't assume.
Reviewers
What people report
Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.
Users report frizz and flyaway control in humidity with a pleasant scent.
Bayareasandra and Angel05, official reviewsFine and frizz-prone users report soft smooth manageable hair, shine, and heat protection without grease.
MrsJen, current official verified reviewA reviewer reports dryness and a dull film after several uses.
Marilyn NYC, official reviewMore from Kerastase
How this page was made
- Everything above is generated from our researched product record — identity, the ingredient list as printed, the brand's own claims, dated price observations, and review themes written in our researchers' own words. No part of this page is written per product.
- 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.
- Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
- 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.
- 5 sources consulted for this product (3 manufacturer or regulatory, 0 retailer, 2 editorial), last checked 2026-08-25.
- Ingredient references are linked for 8 of 19 product-aware annotations on this page. Fit notes are conditional formulation guidance, not a conclusion about the finished product or about you.
- We have not tested this product in a lab and we do not physically test your hair. Formula readings come from the ingredient list; behaviour claims are labelled as the brand's.
- Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice.
- Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
- Formula readings: derivation v22. Record last updated 2026-08-25.