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
Smoother strands, less frizz.
Heat protectant / Lotion, heat-protecting
Add it to your products. We’ll tell you if it’s ever recalled.
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
Complete the consultation to see how well this product fits your hair and your goals. With 6,000+ products in our library, we can match you to the right ones.
$49 with 60 days of follow-up questions and plan updates
$99 with 12 months. Pay once; the year renews only if you choose.
The rest of what your plan weighs on this product.
The consultation builds your hair profile, checks every factor in this table against it, and tells you where this product fits or what to use instead.
Start your consultation$49 once, with 60 days of follow-up questions and plan updates. Nothing renews, and you never have to buy a product.
Your avoid-list
Same job for less elsewhere
$9.80/oz at 5.1 oz, more than 93% of the 891 heat protectants , which mostly run $1.42–5.78/oz.
Great for
Maybe skip if
What the formula actually does
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.
The brand states a protection temperature. That is a label claim, not a measurement.
Middle of the range: noticeable on fine hair, light on coarse hair.
Conditioning agents sit high in the list, so this is a detangling formula.
Water-insoluble silicones or waxes: a detergent wash is what removes them.
Humectants in the working part of the formula.
No fast-drying alcohol in the list.
Fragrance is listed; it sits below the working ingredients.
Ingredients that matter
The workhorse ingredients, plus anything lower down that changes a decision. The 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 so hair combs 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 |
In the US, ingredients above 1% are listed from most to least. Below 1% they can appear in any order. Each note keeps three things apart: what the ingredient generally does, its role in this type of product, and what its position can tell you.
The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.
Listed in the first three ingredients, it is likely a structural part of this formula.
A silicone modified to stick where hair is damaged, so it smooths selectively instead of coating everything. It resists rinsing more than plain dimethicone.
Listed in the first three ingredients, it is likely a structural part of this formula.
A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
Amino-functional silicone carries a positive charge, so it binds where the cuticle is worn rather than coating evenly. Damaged areas get most of it.
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
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.
Listed in the first three ingredients, it is likely a structural part of this formula.
A castor-oil derivative that dissolves fragrance and oils into water so the product stays clear and does not separate.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
A thickening polymer that gives creams and curl products their bounce and helps them cling to the strand.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
Cationic polymers hold a curl loosely and stay soft, which is why they turn up in definition products rather than firm-hold ones.
A cationic polymer stays on the hair through rinsing, which is what keeps static and combing friction down after the wash.
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
A light, dry-feeling ester that spreads other ingredients and softens without a greasy finish.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
A light emollient: it softens the surface with noticeably less weight than an oil or a butter.
Spreads thin and lowers friction between strands without the heaviness of a fixed oil.
Glycerin, also called glycerol, attracts moisture and mixes completely with water.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.
Water 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.
An emulsifier that keeps oils evenly dispersed.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
A high-refractive silicone used specifically for visible shine in serums and finishing oils.
Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.
A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
Dimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
An amino acid that holds water and carries a positive charge, so it is drawn to damaged spots on the strand.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
A 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.
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
An amino acid used for moisture binding and to bring the formula to an acidic pH.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
pH 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.
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
A soft floral fragrance component listed separately as a recognised allergen.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One 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.
One of the amino acids that make up hair protein, added for water binding.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
A wheat protein given a positive charge so it sticks to damaged areas. It conditions and adds temporary strength in one ingredient.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
A cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
Hydrolysed 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.
A plant-derived conditioning agent used for slip and static control.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
A cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.
The class that does the detangling in a conditioner. It deposits lubrication where the cuticle is worn.
Substantive by design. A routine with no detergent wash gives it nothing to leave with.
A ceramide-like lipid used to reinforce the outer surface of damaged hair.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Restoring surface lipids lowers friction between strands, which is where much of the roughness in damaged hair comes from.
A lipid, not a protein, despite sitting alongside proteins in most repair claims. It does not carry the stiffening effect.
Ceramides are the lipid class bleaching and heat deplete. Replacing them works on the surface layer rather than adding protein stiffness.
A plant sugar used as a light humectant, often alongside other sugar-derived moisturisers.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.
A 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.
A floral fragrance component listed separately as a recognised contact allergen.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One 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.
A violet-like fragrance component named separately as a recognised allergen.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One 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.
A rose-scented fragrance component, listed on its own because some people react to it.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One 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.
A rose-like fragrance component named separately as a recognised allergen.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One 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.
A soft cinnamon-floral fragrance component named as a recognised allergen.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One 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.
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.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
Ingredient list captured 2026-08-23. Formulas change, so check the package in your hand when an ingredient matters to you.
Price · 5.1 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.
Formula
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.
The formula score measures completeness for the job: a weighted share of the systems this product type is usually built around that we find in this list. It does not rate how well the product works or its quality, and it never compares across product types.
Does the same job, for less
Formulas that do the same things (cleanse, condition, coat or hold) for less per ounce. Scent, texture and where you buy them can still differ.
See more alternatives in the product library
These products do a similar job. We haven’t matched them to you. Find the one that fits your hair, routine and budget

Final decision
People who blow-dry or flat-iron, looking for heat protection and real detangling slip
Less suited to anyone sensitive to fragrance, curly-method routines, or vegan and cruelty-free shopping
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
Claims are quoted from the brand. We mark a claim supported, partly supported or conflicting only when the ingredient list speaks to it. Everything else stays "stated by the brand". That isn’t a criticism: most claims can’t be checked from a label.
Anti-frizz protection for up to 72 hours
Silicones or film formers smooth the cuticle, which is the usual mechanism.
Smoother strands, less frizz.
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.
Sold for hot tools; untestable here.
Illuminates shiny hair
The formula carries a recognised shine system — silicone, oil, or light ester.
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.
Reflects light for visible shine.
We look at the first 10–15 ingredients and what they do in a formula, not at the marketing. If the list doesn't speak to a claim, we don't assume.
Reviewers
Themes that come up again and again in sourced reviews, written by our researchers in their own words. We don’t store or scrape star ratings.
Many reviewers say it shields hair from heat styling and leaves it soft and shiny.
Reviewers who heat style dailySome reviewers say it left hair dry, dull or straw-like, with no real shine.
Reviewers across hair typesMany reviewers call it lightweight and non-greasy, though some find it heavy or greasy if over-applied.
Reviewers with fine hairMany reviewers say it tames frizz, especially in humid weather, while some say frizz persisted or worsened.
Reviewers with fine, curly or wavy hairMany reviewers love the scent, but some say recent bottles smell fishy, chemical-like, or otherwise off.
Reviewers across hair types, some sensitive to fragrance