L'Oreal Professionnel [Metal Detox] Strengthening Hair Oil — front of package

L'Oreal Professionnel

[Metal Detox] Strengthening Hair Oil

Finisher / Hair oil, light-reflecting

Finisher
oil
Sulfate-free
Protein-free
Moisture-rich

Size1.6OZ

Price$36.06seen at one store · 1.6 oz

Price / oz$22.69/ozat 1.6 oz

Where to buy3 stores · $36.06–38.00

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.

Personal fit

Is this right for you?

Factor Your profile Fit

Best for hair types All types Not in your profile

Moisture level High Not in your profile

Shine system Moderate Not in your profile

Slip / detangling Moderate Not in your profile

Weight on hair Light Not in your profile

Fragrance Present Not in your profile

Protein None 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 22 factors we check

The rest of what your plan weighs on this product.

Essential oils None listed Not in your profile

Fast-drying alcohol Moderate Not in your profile

Vegan / cruelty-free Not yet verified Not in your profile

Animal-derived ingredients Not yet verified Not in your profile

Aerosol can Pump or tube Not in your profile

Needs heat to set Not determined Not in your profile

Heavy humectants Heavy Not in your profile

Hard-water defence None Not in your profile

UV filter None listed Not in your profile

Ingredient list 29 ingredientsAbout average Not in your profile

Price tier Salon Not in your profile

Where to buy it Brand websiteOne channel Not in your profile

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.

Same job for less elsewhere

$22.69/oz at 1.6 oz, more than 89% of the 270 hair oils , which mostly run $3.15–14.77/oz.

View alternatives

Great for

Protein-sensitive hairthat stiffens when protein is added

Dry, thirsty hairhumectants and emollients both sit up front

Fine hairthat flattens under most products

Dull-looking haira recognised shine system is present

Aerosol avoidancea pump or tube, not a pressurised can

Maybe skip if

this product has a scent

Curly-method routinesthese silicones need a detergent to remove

Very dry or damaged hairit contains fast-drying alcohol

Anyone who dislikes a castthe film formers here can set firm

Dry or very humid airwhere heavy humectants work against you

Tight budgetsit sits in the upper price tiers

Whether a finisher this rich looks shiny or greasy on you depends on your strand thickness and how oily your hair gets. Your consultation answers that.

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.

Shine system Volatile carrier

Light esters or a volatile carrier: shine with little residue.

Weight on the hair Light

Water-first and light: unlikely to flatten fine hair.

Oils and butters None

No oils or butters in the list.

Needs detergent to remove Yes

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

Fast-drying alcohol Present

Contains fast-drying alcohol, which speeds drying but can leave hair feeling dry.

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. 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
Isododecane	solvent	The base everything else is dissolved in	Shine
WaterAQUA / WATER / EAU	solvent	The base everything else is dissolved in	Neutral
Dipropylene Glycol	humectant	Pulls water into the hair	Moisturizes
Dimethicone	silicone	The shine system	Buildup
Alcohol Denat.ALCOHOL DENAT	drying alcohol	Speeds drying but can leave hair feeling dry	Drying
Dimethiconol	silicone	The shine system	Buildup
Glycerin	humectant	Pulls water into the hair	Moisturizes
Peg-14 Dimethicone	emulsifier	Keeps oil and water mixed	Buildup
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 carriesNo sulfates. Protein-free: this is built for moisture rather than for strengthening. Contains fragrance. The silicones here need a detergent wash to come off.

Full ingredient list (29)

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.

1 Isododecane

General function
A fast-evaporating carrier that lets oils and polymers spread thinly, then leaves nothing behind.

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

May suitFrizz-prone, damaged, or high-friction hair
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

PubChem
- solvent
- emollient
2 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
3 Dipropylene Glycol

General function
A light humectant and solvent that helps fragrance and extracts dissolve evenly.

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

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it adds less weight than oils or butters do.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
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.

PubChem
- humectant
- solvent
4 Dimethicone

General function
The most common conditioning silicone. It coats the strand for shine, slip, and frizz control, and needs a detergent (not just water) to wash out.

Role in this product type
In a finishing oil, dimethicone spreads as a smooth, low-friction layer over the hair surface. It improves slip, reduces flyaways, and creates a glossier finish.

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

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
May suit frizz-prone, damaged, or high-friction hair that benefits from surface smoothing and added slip.

DependsBuild-up-sensitive routines
Consider cleansing habits: dimethicone is not water-soluble, so repeated use may leave more deposited film than a low-detergent routine removes.

Dow
- silicone
- emollient
- conditioning agent
5 Alcohol Denat. · ALCOHOL DENAT

General function
Fast-drying alcohol used to make sprays set quickly. In leave-on products it can leave hair feeling dry, especially in high position on the list.

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

May not suitDry, coarse, or high-porosity hair
Porous hair gives water up easily as it is; a fast-evaporating solvent high on the list accelerates that.

May not suitVery dry or highly damaged hair
It evaporates quickly and takes some water with it. On hair already short of moisture, a formula built on a lot of it can finish drier than it started.

PubChem
- drying alcohol
- solvent
6 Dimethiconol

General function
A high-shine silicone often paired with dimethicone for a smoother, glossier finish.

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

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
Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.

May not suitBuild-up-sensitive routines
Dimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.

PubChem
- silicone
- emollient
7 Glycerin

General function
Glycerin, also called glycerol, attracts moisture and mixes completely with water.

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
High-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 hair
Binds 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 hair
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.

Scientific Reports
- humectant
8 Peg-14 Dimethicone

General function
A silicone made water-soluble by ethoxylation. It smooths and adds slip, and rinses out with water rather than needing a detergent.

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

May suitBuild-up-sensitive routines
The PEG- and PPG-modified silicones disperse in water, so ordinary washing carries them off instead of leaving a film to accumulate.

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
Delivers the slip and surface smoothing of a silicone without needing a detergent wash to remove it afterwards.
- emulsifier
- silicone
- water-soluble silicone
9 Hydroxyethyl Urea

General function
A humectant that holds water without glycerin's stickiness. It stays effective in drier air better than most.

Secondary ingredient
Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

May suitDry, coarse, or high-porosity hair
High-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 hair
Binds 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 hair
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.

PubChem
- humectant
▾Below about here, the order stops meaning much. These are usually used at 1% or less.
10 Phenoxyethanol
- preservative
11 PEG-60 Hydrogenated Castor Oil
- solubilizer
- emulsifier
12 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
13 Polyacrylamide

General function
A thickening polymer that also leaves a light film, used in gels and styling creams.

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 suitClimate-sensitive or frizz-prone hair
A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

May suitMaximum-hold styling
Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

DependsBuild-up-sensitive routines
Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.
- film former
- polymer
- thickener
14 C13-14 Isoparaffin

General function
A light carrier used to spread silicones and polymers thinly.

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 suitFrizz-prone, damaged, or high-friction hair
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
- emollient
- solvent
15 Propylene Glycol

General function
A small humectant and solvent that keeps formulas stable and helps active ingredients spread.

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
Light and water-binding rather than oily, so it adds less weight than oils or butters do.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
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.

PubChem
- humectant
- solvent
16 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
17 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
18 Laureth-7
- emulsifier
- solubilizer
19 Caramel

General function
A colour added to tint the product itself. It does not colour 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 suitGray, silver, or brass-prone hair
A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.
- colourant
20 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
21 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
22 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
23 Coumarin

General function
A sweet, hay-like 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
24 Ci 19140 / Yellow 5

General function
A certified colour that tints the product itself. It does not colour 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 suitGray, silver, or brass-prone hair
A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.
- colourant
25 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
26 Ci 15985 / Yellow 6
- colourant
27 Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
- antioxidant
28 Sodium Benzoate
- preservative
29 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

What the whole list adds up to

7 fragrances
6 solvents
6 named fragrance allergens
4 emollients
4 humectants
3 silicones
3 emulsifiers
3 colourants
2 preservatives
2 solubilizers
2 film formers
2 polymers
1 conditioning agent
1 drying alcohol

Ingredient list captured 2026-10-07. Formulas change, so check the package in your hand when an ingredient matters to you.

Price · 1.6 oz

Seen at $36.06 lowest of 2 stores · checked Oct 22

Good value under $7 Under $4.39/oz it costs less than three-quarters of the 8 products we score as doing the same job

Priced above the products that do the same job. Stores sell it above the $7 line; products that do this job typically go for about $12 at this size.

Show the price ladder

Price for 1.6 ozlower is better

Where we’ve seen it3 listings · 3 stores

sass-salon.com
$36.06

1.6 oz · $22.54/oz

Oct 22Lowest per oz
Gretta & Co.
$36.55

1.6 oz · $22.84/oz

Oct 22
Planet Beauty (planetbeauty.com)
$38.00

1.6 oz · $23.75/oz

Oct 17

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

1.6 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 $36.06 is the price we have observed for the 1.6 oz. We need three stores before we call a price commonly seen.
Good value under $7 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $4.39/oz; at 1.6 oz that is $7. Under that line you are paying less than most of them.
About $12 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 1.6 oz.

Formula

Formula score

10 of 10

The formula carries what a hair oil is built around, and 5 products we score as close matches cost at least a quarter less per ounce. The difference is the label, not the formula.

How the score is counted

5 products we score as doing the same job cost less per ounce
Costs more per ounce than 89% of the 270 hair oils we’ve priced
Covers 6 of the 6 things a hair oil should do
Salon tier, sold at Brand website

A shine systemThe silicone, oil, or ester that produces gloss.3 pts
A weightless carrierDelivers the shine without leaving grease.2 pts
Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
An antioxidantKeeps the oils in the bottle from going off.1 pt
No drying alcohol in the first threeFast drying without leading on alcohol.1 pt
Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt

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.

L'Oreal ParisClosest function EverPure Bond Repair+ Oil-in-Serum $8.12/oz $14.57/oz less

Protein-free
Lightweight
Shine

Function: Film formers
Also: Citrus scent
Drugstore tier

Compare

MatrixClose function Instacure Build-A-Bond Billion Bond Oil $14.79/oz $7.90/oz less

Protein-free
Lightweight
Shine

Function: Film formers
Also: Citrus scent
Vegan
1.7 oz bottle

Compare

MatrixLowest cost per oz Instacure Build-A-Bond Repairing Oil $2.00/oz $20.69/oz less

Protein-free
Lightweight
Shine

· Close function

Function: Film formers
Also: Sold through salons

Compare

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

Should you buy it?

Hard to justify at this price

Best user

Hair that stiffens on protein, looking for a protein-free formula and moisture that stays in

Biggest tradeoff

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

Best alternative if not

Consider L'Oreal Paris EverPure Bond Repair+ Oil-in-Serum, 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, and what the formula shows

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.

SupportedBacked by ingredients

Partly supportedSome supporting logic

Stated by brandNo clear evidence

Potential conflictFormula works against claim

Shields harmful metals from entering the hair fiber

This is a marketing claim; an ingredient list cannot speak to it.

—

Stated by brand

Can’t be confirmed from label.

Increases shine, reduces frizz, and protects against heat up to 450° F

Silicones or film formers smooth the cuticle, which is the usual mechanism.

Dimethicone
Dimethiconol
Peg-14 Dimethicone

Supported

Smoother strands, less frizz.

How to read this

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.

How this page was made

Everything above comes from our researched product record: identity, the ingredient list as printed, the brand's own claims, dated prices and review themes our researchers wrote in their own words. No part of this page is written by hand for one 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.
3 sources consulted for this product (1 manufacturer or regulatory, 1 retailer, 1 editorial), last checked 2026-10-17.
Ingredient references are linked for 14 of 22 product-aware annotations on this page. Fit notes are general formulation guidance. They aren’t a verdict on the finished product or on you.
We haven’t tested this product in a lab, and we don’t physically test your hair. Formula readings come from the ingredient list. Claims about how it behaves are labelled as the brand's.
Ingredient order tells you relative amount only above roughly 1%. Prices are what we saw on the dates shown and can change.
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 v23. Record last updated 2026-10-17.

[Metal Detox] Strengthening Hair Oil

Is this right for you?

Read from the label, not the marketing

The ingredients that change a decision

What the whole list adds up to

Should you buy it?

What the brand says, and what the formula shows

More from L'Oreal Professionnel

How this page was made

Hair Care Consultation