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L'Oreal Professionnel

Serie Expert Metal Detox Mask

Mask / Weekly treatment, lean

  • Mask / treatment
  • color care
  • Sulfate-free
  • Protein-free
Size8.45 fl oz
Price$23.25 Good valueseen at one store · 8.45 oz
Price / oz$3.30/ozat 8.45 oz

Scent:

Notes: fresh.

Manufacturer page: us.lorealprofessionnel.com

Personal fit

Is this right for you?

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Priced with its peers

$3.30/oz at 8.45 oz — less than 53% of the 347 masks and treatments , which mostly run $1.63–5.74/oz.

Price and stores

Great for

Protein-sensitive hairthat stiffens when protein is added
Maximum slipfor hair that tangles the moment it is wet
A wide range of haira middle-of-the-range weight
Easy to findsold through several channels

Maybe skip if

this product carries a scent
Curly-method routinesthese silicones need a detergent to remove
Very dry or damaged hairit contains fast-drying alcohol
Hair that needs proteinthere is none in this list
Very dry hairno humectant appears in the list
Tight budgetsit sits in the upper price tiers

Whether your hair needs moisture, protein, or bond repair right now depends on your damage history and how your hair behaves wet — that is what the consultation works out.

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.

Oils and butters None

No oils or butters in the list.

Weight on the hair Medium

Middle of the range — noticeable on fine hair, light on coarse hair.

Protein None

No protein or amino acids in the list.

Water-binding (humectants) None found

No humectants found — nothing here pulls water into the hair.

Slip and detangling High

Conditioning agents sit high in the list — this is a detangling formula.

Time on the hair 1–15 min

Long enough that it is a planned step, not a shower add-on.

Needs detergent to remove Yes

Water-insoluble silicones or waxes: a detergent wash is what removes them.

Fragrance Prominent

Fragrance sits in the first eight ingredients — a larger share of the formula.

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.

IngredientWhat it doesWhy it mattersChip
WaterAQUA/WATER/EAU solvent The base everything else is dissolved in Neutral
Cetearyl Alcohol fatty alcohol Thickens and conditions — not a drying alcohol Softens
Amodimethicone silicone Smooths the cuticle and adds shine Buildup
Behentrimonium Chloride conditioning agent Conditions and softens — this is what makes it comb through Detangles
Cetyl Esters light ester Light slip without much weight Softens
FragrancePARFUM/FRAGRANCE fragrance The scent Fragrance
Isopropyl Alcohol drying alcohol A small amount, for fast drying Drying
Trideceth-6 emulsifier Stabilises the mix Stabilizes
Limonene fragrance The scent Fragrance
Hexyl Cinnamal fragrance The scent Fragrance
Linalool fragrance The scent Fragrance
Citral fragrance The scent Fragrance
What the list leaves out, and what it carriesThe list carries no sulfates. No protein — a moisture formula, not a repair one. Fragrance is on the label. Water-insoluble silicones — needs a detergent wash to remove.
Full ingredient list (20)

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/EAU
    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 ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    • solvent
  • 2 Cetearyl Alcohol
    General function

    A waxy fatty alcohol - nothing like drying alcohol. It gives conditioners their body and leaves a soft, smoothing film on the hair.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitDry, coarse, or high-porosity hair

    The waxy solid that gives a conditioner its body. It deposits a soft lubricating layer, which is most of what makes hair feel smooth after rinsing.

    May suitFrizz-prone, damaged, or high-friction hair

    Deposits with the cationic conditioners and helps them lie flat along the strand, which is where the detangling actually comes from.

    DependsFine or easily flattened hair

    Near the top of a conditioner it is doing most of the conditioning, and most of the weighting, at the same time.

    PubChem
    • fatty alcohol
    • emollient
    • thickener
  • 3 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 ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitClimate-sensitive or frizz-prone hair

    A 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 hair

    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.

    May suitMaximum-hold styling

    Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.

    International Journal of Trichology
    • silicone
    • conditioning agent
    • film former
  • 4 Behentrimonium Chloride
    General function

    A positively charged conditioning agent that binds to damaged, negatively charged spots on the hair. It is the main detangling ingredient in most rinse-out conditioners.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitDry, coarse, or high-porosity hair

    Electrokinetic measurement puts the C22 quat ahead of the C16 ones for deposition: the longer chain adds van der Waals stabilisation on top of the charge binding. That extra deposit is what coarse hair usually needs to comb through.

    May suitFrizz-prone, damaged, or high-friction hair

    A cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.

    DependsBuild-up-sensitive routines

    Substantive by design. A routine with no detergent wash gives it nothing to leave with.

    International Journal of Cosmetic Science
    • conditioning agent
    • cleanser
  • 5 Cetyl Esters
    General function

    A waxy ester blend that replaces spermaceti in creams. It thickens and leaves a smooth, non-greasy finish.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitFine or easily flattened hair

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    • light ester
    • emollient
    • thickener
  • Below about this point, order stops being meaningful — these are typically used at 1% or less.
  • 6 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 zone

    It 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 routines

    Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

    • fragrance
    • declared fragrance
  • 7 Isopropyl Alcohol
    General function

    A fast-evaporating alcohol used as a solvent and to speed drying. Well down the list it is a processing aid; near the top it can leave hair feeling dry.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitFine or easily flattened hair

    Evaporates on contact, which is how a spray sets almost instantly and leaves no weight behind it.

    PubChem
    • drying alcohol
    • solvent
  • 8 Trideceth-6
    General function

    A solubiliser that keeps oils and fragrance dissolved in a watery formula.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    • emulsifier
    • solubilizer
  • 9 Phenoxyethanol
    • preservative
  • 10 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 zone

    It 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 routines

    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.

    PubChem
    • fragrance
    • named fragrance allergen
  • 11 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 zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitFine or easily flattened hair

    The 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 hair

    A cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.

    DependsBuild-up-sensitive routines

    Substantive by design. A routine with no detergent wash gives it nothing to leave with.

    International Journal of Cosmetic Science
    • conditioning agent
    • cleanser
  • 12 Hexyl Cinnamal
    General function

    A jasmine-like fragrance component named separately as a recognised allergen.

    Estimated lower-concentration zone

    It 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 routines

    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.

    PubChem
    • fragrance
    • named fragrance allergen
  • 13 Linalool
    General function

    A floral fragrance component listed separately as a recognised contact allergen.

    Estimated lower-concentration zone

    It 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 routines

    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.

    PubChem
    • fragrance
    • named fragrance allergen
  • 14 Chlorhexidine Dihydrochloride
    • preservative
  • 15 Citral
    General function

    A lemon-scented fragrance component listed separately as a recognised allergen.

    Estimated lower-concentration zone

    It 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 routines

    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.

    PubChem
    • fragrance
    • named fragrance allergen
  • 16 Geraniol
    General function

    A rose-scented fragrance component, listed on its own because some people react to it.

    Estimated lower-concentration zone

    It 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 routines

    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.

    • fragrance
    • named fragrance allergen
  • 17 Glycine
    General function

    The smallest amino acid in hair protein, added for moisture binding.

    Estimated lower-concentration zone

    It 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 hair

    Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

    DependsProtein-sensitive hair

    The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.

    PubChem
    • amino acid
  • 18 Tocopherol
    • antioxidant
    • vitamin
  • 19 Polyquaternium-7
    General function

    A conditioning polymer that improves wet combing and adds body. Repeated use can build up on fine hair.

    Estimated lower-concentration zone

    It 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 hold

    Cationic 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 hair

    A cationic polymer stays on the hair through rinsing, which is what keeps static and combing friction down after the wash.

    May suitMaximum-hold styling

    Film 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
  • 20 Sodium Benzoate
    • preservative

What the whole list adds up to

  • 6 fragrances
  • 5 named fragrance allergens
  • 3 conditioning agents
  • 3 preservatives
  • 2 solvents
  • 2 emollients
  • 2 thickeners
  • 2 film formers
  • 2 cleansers
  • 1 fatty alcohol
  • 1 silicone
  • 1 conditioning agent
  • 1 light ester
  • 1 declared fragrance

Ingredient list captured 2026-08-24. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 8.45 oz

Seen at $23.25 lowest of 2 stores · checked Aug 30
Good value under $33 Under $3.86/oz it costs less than three-quarters of the 7 products we score as doing the same job

Usually a good value. Most stores sell it under the $33 line, and products that do this job typically go for about $59 at this size.

Show the price ladder
Where we’ve seen it4 listings · 4 stores
  • sweetcare.com
    $23.25
    8.45 oz · $2.75/oz
    Aug 30Lowest per oz
  • Walmart
    $32.64
    8.5 oz · $3.84/oz
    Aug 24
  • SweetCare
    $32.57
    8.45 oz · $3.85/oz
    Aug 30Sale · was $40.71
  • Amazon
    $52.00
    8.5 oz · $6.12/oz
    Aug 24

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. and 1 listing we don’t count — grey-market or unverified sellers.

How we work this out
  1. 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.
  2. Seen at $23.25 is the price we have observed for the 8.45 oz. We need three stores before we call a price commonly seen.
  3. Good value under $33 comes from the 7 products we score as doing the same job as this one. A quarter of them cost less than $3.86/oz; at 8.45 oz that is $33. Under that line you are paying less than most of them.
  4. About $59 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 8.45 oz.

Formula

Formula score
5 of 10

Nothing separates this from the middle of the range for masks and treatments, on formula or on cost per ounce.

How the score is counted
  • 2 products that do the same job cost less per ounce
  • Costs less per ounce than 53% of the 347 masks and treatments we’ve priced
  • No rich emollients in the formula
  • Reviewers mention 2 things they like about how it performs
  • 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.

GoldwellClosest function Dualsenses Color 60Sec Treatment $2.26/oz $1.04/oz less
  • Protein-free
  • Alcohol-free
  • Medium weight
Function
  • Water-binding (humectants)
  • Film formers
Also
  • Cruelty-free
  • Masstige tier
  • 6.7 oz bottle
Compare
GoldwellLowest cost per oz Dualsenses Color Extra Rich 60sec Treatment $2.13/oz $1.17/oz less
  • Protein-free
  • Alcohol-free
  • Vegan & CF
· Close function
Function
  • Water-binding (humectants)
  • Film formers
Also
  • Cruelty-free
  • Vegan
  • Masstige tier
Compare

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

Suits every hair pattern

Final decision

Should you buy it?

Only for a specific need
Best user

Hair that stiffens on protein — for a protein-free formula and real detangling slip

Biggest tradeoff

Less suited to anyone sensitive to fragrance, curly-method routines, or very dry or high-damage hair

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.

1
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
2
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Apply evenly on shampooed and towel-dried hair; leave on 1 to 15 minutes depending on level of damage, then rinse thoroughly

These are the brand’s directions for use, not a claim about the formula.

Stated by brand

How to use it, not a claim.

Salon soft hair at home

Not measurable from ingredients; depends on personal preference.

Stated by brand

Subjective feel varies by hair.

Positioned for color-treated hair to protect against metal-related damage

It avoids sulfate detergents, which are the usual cause of fast fade.

  • Behentrimonium Chloride
  • Cetrimonium Chloride
  • Tocopherol
Supported

Less fade per wash.

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.

Removes metallic/mineral buildup from hard water, leaving hair soft and shiny

Walmart reviewer: "This mask...remove the metallic...dirt which exist in our water...and my hair became so soft and shiny and healthy."

Tones down brassy/over-processed color after use

Walmart reviewer: "After using this product as the conditioner after shampooing the dye out...I was thrilled to see my hair was toned down to a much more natural shade."

Used as an occasional deep conditioner rather than daily conditioner

Walmart reviewer: "I don't use this conditioner everyday as I consider it more of a deep conditioner."

More from L'Oreal Professionnel

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, 2 retailer, 0 editorial), last checked 2026-08-25.
  • Ingredient references are linked for 10 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 2026-08-25.