Première Concentré Décalcifiant Ultra-Réparateur
Mask / Light treatment, lean
- Mask / treatment
- Sulfate-free
- Lightweight
Scent:
The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.
Personal fit
Is this right for you?
Complete the consultation to see exactly how well this product fits your hair and your goals. With 2,400+ products in our library we can match exactly the right products to you.
- In 10 minutes we can identify your exact hair condition and traits.
- Every product matched against your hair across the 21 factors we check.
- A personalized routine for your daily life — your schedule, styling habits, and local weather.
- Find products that do the same job at a lower cost.
- Your goals, scalp, damage history, water, budget, and scent preferences all shape your plan.
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Show all 21 factors we check
The rest of what your plan weighs on this product.
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
$7.34/oz at 8.45 oz — more than 85% of the 341 masks and treatments , which mostly run $1.63–5.59/oz.
Great for
Maybe skip if
Wash day
How it fits into wash day
Read from the product’s own directions on the date shown. A step the label leaves out is shown as not stated, never filled in.
- When
- Before shampoo — Bond-care treatment (manufacturer claim)
- Start on
- damp hair
- Where
- lengths
- Label wait
- 5 minutes
- Then
- no rinse — go straight to the named companion
- Needs
- Première Bain Décalcifiant Réparateur Repairing Shampoo
- Conditioner after
- the label recommends conditioning after
- How often
- not stated on the label
- Apply generously on damp hair before shampoo and massage throughout.
- Leave on for 5 minutes.
- Don't rinse and layer Première Bain directly to maximize efficacy.
- Massage and emulsify.
- Rinse and follow with Première Fondant or Mask.
Not yet complete on our side: the companion product it needs. We list a product here once its label states a before-shampoo use. We only put it into a routine once every step is on record.
This product works as part of a system whose companion we have not verified; it is listed, not recommended on its own.
Browse technique guides (general — not matched to this product’s directions)
Source: retailer page · checked 2026-09-17
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.
No oils or butters in the list.
Water-first and light: unlikely to flatten fine hair.
Protein appears, low enough to be a supporting ingredient.
Humectants near the top — water-binding is a headline mechanism here.
Conditioning agents are present, lower in the list.
Water-insoluble silicones or waxes: a detergent wash is what removes them.
Fragrance sits in the first eight ingredients — a larger share of the formula.
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 |
| Glycerin | humectant | Pulls water into the hair | Moisturizes |
| Propylene Glycol | humectant | Pulls water into the hair | Moisturizes |
| Glycine | amino acid | Small protein fragments that bind water | Protein |
| Citric Acid | pH adjuster | Fine-tunes the pH | pH balancer |
| PEG-40 Hydrogenated Castor Oil | solubilizer | Helps dissolve the oils | Stabilizes |
| Sodium Hydroxide | pH adjuster | Fine-tunes the pH | pH balancer |
| FragranceParfum/Fragrance | fragrance | The scent | Fragrance |
| Hydrolyzed Vegetable Protein PG-Propyl Silanetriol | film former | A supporting film former | Protein |
| Quaternium-80 | silicone | A little smoothing and shine | Buildup |
| Limonene | fragrance | The scent | Fragrance |
| Linalool | fragrance | The scent | Fragrance |
Full ingredient list (21)
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
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.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
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
-
3
Propylene Glycol
General function
A small humectant and solvent that keeps formulas stable and helps active ingredients spread.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitFine or easily flattened hairLight and water-binding rather than oily, so it hydrates without contributing weight.
May suitVery dry or highly damaged hairA small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.
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.
- humectant
- solvent
-
4
Glycine
General function
The smallest amino acid in hair protein, added for moisture binding.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
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.
DependsProtein-sensitive hairThe lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
- ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
5
Citric Acid
General function
Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.
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.
International Journal of TrichologyMay suitBuild-up-sensitive routinesHolds hard-water minerals in solution so they rinse away instead of depositing on the hair.
May suitFrizz-prone, damaged, or high-friction hairThe acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.
May suitGray, silver, or brass-prone hairWhere a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.
- pH adjuster
- hard-water chelator
-
6
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.
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.
- solubilizer
- emulsifier
-
7
Sodium Hydroxide
General function
A strong base used in trace amounts to raise pH; fully neutralised in the finished product.
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.
International Journal of TrichologyDependsFrizz-prone, damaged, or high-friction hairThe alkali half of a pH-adjusting pair, used in small amounts to bring a formula up to its target rather than to make it alkaline. Alkaline conditions raise the fibre's surface charge and lift the scales — but the finished pH is not on the label.
- pH adjuster
-
8
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
-
9
Cetrimonium Chloride
General function
A quick-acting conditioning agent that reduces static and combing force. It also helps keep the formula stable.
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.
International Journal of Cosmetic ScienceMay suitFine or easily flattened hairThe C16 quat binds mostly by charge rather than by chain, so it deposits measurably less than the C22 ones. Less deposit is less conditioning and also less weight, which is usually the trade fine hair wants.
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.
DependsBuild-up-sensitive routinesSubstantive by design. A routine with no detergent wash gives it nothing to leave with.
- conditioning agent
- cleanser
-
10
Polysorbate 20
- solubilizer
- emulsifier
-
11
Polysorbate 80
- emulsifier
- solubilizer
-
12
Phenoxyethanol
- preservative
-
13
Hydrolyzed Vegetable Protein PG-Propyl Silanetriol
General function
A plant protein modified to bind more firmly to hair than a plain hydrolysed protein. Used for strength and body claims.
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 hairFilling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.
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.
- film former
- protein
- hydrolysed protein
-
14
Hydroxypropyl Guar
General function
A modified guar gum used to thicken and give a slippery, cushioned feel.
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 suitCurls or waves needing flexible holdGums thicken and set soft, which gives definition that bends rather than a rigid cast.
May suitMaximum-hold stylingA styling polymer dries into a film across the strands, which is what makes a shape hold instead of relax.
- gum
- thickener
- polymer
-
15
Hydroxypropyl Guar Hydroxypropyltrimonium Chloride
General function
A guar-bean conditioning polymer that deposits during rinsing. It is why a strong shampoo can still leave hair combable.
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 suitCurls or waves needing flexible holdGums thicken and set soft, which gives definition that bends rather than a rigid cast.
May suitFrizz-prone, damaged, or high-friction hairCationic conditioners bind to the negatively charged damaged cuticle, laying it flat and cutting the friction that causes combing breakage.
May suitMaximum-hold stylingA styling polymer dries into a film across the strands, which is what makes a shape hold instead of relax.
- conditioning agent
- polymer
- gum
-
16
Quaternium-80
General function
A conditioning silicone with a positive charge, so it deposits where hair is damaged and stays through rinsing.
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 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
-
17
Limonene
General function
A citrus-smelling fragrance component that EU rules require to be named separately 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.
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
-
18
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
-
19
Sodium Benzoate
- preservative
-
20
Citral
General function
A lemon-scented 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
-
21
Potassium Sorbate
- preservative
What the whole list adds up to
- 4 fragrances
- 3 solubilizers
- 3 emulsifiers
- 3 conditioning agents
- 3 preservatives
- 3 named fragrance allergens
- 2 solvents
- 2 humectants
- 2 pH adjusters
- 2 film formers
- 2 gums
- 2 polymers
- 1 amino acid
- 1 hard-water chelator
Ingredient list captured 2026-09-17. Formulas change — check the package in your hand when an ingredient matters to you.
Price · 8.45 oz
Priced above the products that do the same job. Stores sell it above the $29 line; products that do this job typically go for about $35 at this size.
Show the price ladder
Where we’ve seen it1 listing · 1 store
-
Curried Ayspa (US salon supply retailer)
$62.008.45 oz · $7.34/ozSep 17Lowest 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
- 8.45 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 $62 is the price we have observed for the 8.45 oz. We need three stores before we call a price commonly seen.
- Good value under $29 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $3.40/oz; at 8.45 oz that is $29. Under that line you are paying less than most of them.
- About $35 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 8.45 oz.
Formula
Sold through salons at a price 5 products that do the same job undercut — the distribution is part of what you are paying for.
How the score is counted
- 5 products that do the same job cost less per ounce
- Costs more per ounce than 85% of the 341 masks and treatments we’ve priced
- No rich emollients in the formula
- No conditioning agents up front either
- Rich emollientsThe depth a treatment step is built around.3 pts
- Conditioning agents up frontWhat makes wet hair comb through.2 pts
- Protein or amino acidsThe strengthening side of a treatment.2 pts
- A humectantBinds water into the hair.1 pt
- A stated dwell timeThe brand says how long to leave it on.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.
- Alcohol-free
- Quick
- Medium weight
- Function
- Also
- Wash day
- this one is not a before-shampoo product
- Quick
- Medium weight
- Widely sold
- Function
- Also
- Wash day
- this one is not a before-shampoo product
- Protein-free
- Lightweight
- Quick
- Function
- Also
- Wash day
- this one is not a before-shampoo product
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?
Hard to justify at this priceFine or easily-flattened hair — for something that will not weigh hair down and a formula with no drying alcohol
Worth skipping for anyone sensitive to fragrance, curly-method routines, or very dry or very humid climates
Goldwell Dualsenses Rich Repair 60sec Treatment, 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.
More 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.
- 2 sources consulted for this product (0 manufacturer or regulatory, 2 retailer, 0 editorial), last checked 2026-09-17.
- Ingredient references are linked for 9 of 14 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 2026-09-17.