amika

Bust Your Brass Toning + Strength Repair Mask

Mask / Deep treatment, lightly emollient

Mask / treatment
Sulfate-free
Moisture-rich
Cruelty-free · PETA-listed

Size8 fl oz

Price$44seen at one store · 8 oz

Price / oz$5.50/ozat 8 oz

Where to buy1 store

Scent:

The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.

Manufacturer page: loveamika.com

Personal fit

Is this right for you?

Factor Your profile Fit

Best for hair types Curly–Coily Not in your profile

Moisture level Moderate Not in your profile

Oils and butters Low Not in your profile

Slip / detangling High Not in your profile

Weight on hair Rich Not in your profile

Fragrance Prominent 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 21 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 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

pH adjusted Adjusted 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 website · Salons +1Widely sold 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.

Start your consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

Upper-mid price for a treatment

$5.50/oz at 8 oz — more than 73% of the 347 masks and treatments , which mostly run $1.63–5.74/oz. The cost less.

Price and stores

Great for

Maximum slipfor hair that tangles the moment it is wet

Dry, thirsty hairhumectants and emollients both sit up front

Coarse or dry hairthat absorbs everything you give it

Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers

Easy to findsold through several channels

Maybe skip if

this product carries a scent

Curly-method routinesthese silicones need a detergent to remove

Oily scalp or fine hairthat gets weighed down

Very dry or damaged hairit contains fast-drying alcohol

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 Present, lower down

Oils are present, but low enough to be a finishing touch.

Weight on the hair Rich

Heavy butters and waxes in the first eight ingredients.

Protein Minor

Protein appears, low enough to be a supporting ingredient.

Water-binding (humectants) Moderate

Humectants in the working part of the formula.

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.

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.

Ingredient	What it does	Why it matters	Chip
WaterWater/Aqua/Eau	solvent	The base everything else is dissolved in	Neutral
Cetyl Alcohol	fatty alcohol	Thickens and conditions — not a drying alcohol	Softens
Isopropyl Myristate	light ester	Light slip without much weight	Softens
Behentrimonium Chloride	conditioning agent	Conditions and softens — this is what makes it comb through	Detangles
Cetearyl Alcohol	fatty alcohol	Thickens and conditions — not a drying alcohol	Softens
Dimethicone	silicone	Smooths the cuticle and adds shine	Buildup
Glycerin	humectant	Pulls water into the hair	Moisturizes
FragranceFragrance/Parfum	fragrance	The scent	Fragrance
Hydrolyzed Quinoa	film former	A supporting film former	Protein
Bis-Pca Dimethicone	silicone	A little smoothing and shine	Buildup
Disodium Peg-12 Dimethicone Sulfosuccinate	mild anionic cleanser	—	Buildup
Isopropyl Alcohol	drying alcohol	A small amount, for fast drying	Drying

What the list leaves out, and what it carriesThe list carries no sulfates. Fragrance is on the label. Heavier butters sit in the working part of the list. Water-insoluble silicones — needs a detergent wash to remove.

Full ingredient list (29)

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 · Water/Aqua/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 Cetyl Alcohol

General function
A fatty alcohol used to thicken creams and add slip. It softens rather than dries.

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 Isopropyl Myristate

General function
A very light ester that makes products glide and disappear quickly on the hair.

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

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.

PubChem
- light ester
- emollient
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 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.

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
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
6 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.

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.
- silicone
- emollient
- conditioning agent
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 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
▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
8 Fragrance · Fragrance/Parfum

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
9 Hippophae Rhamnoides Fruit/Seed Oil
- oil
- emollient
10 Borago Officinalis Seed Oil

General function
The oil pressed from Borago Officinalis. How much weight a plant oil leaves depends on the hair it lands on; coarse hair tends to take more of it than 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 suitDry, coarse, or high-porosity hair
Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

May suitFrizz-prone, damaged, or high-friction hair
A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.
- oil
- emollient
11 Mangifera Indica (Mango) Seed Butter · Mangifera Indica Seed Butter

General function
A plant butter that is slightly lighter than shea, used in curl 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 suitDry, coarse, or high-porosity hair
Coarse, porous hair loses water quickly and can carry the weight; a butter slows that loss more than a thin oil does.

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.

May suitVery dry or highly damaged hair
A solid fat melts onto the strand at body temperature and stays there, which is the heaviest surface moisture-holding a formula can offer.
- butter
- emollient
12 Butyrospermum Parkii (Shea) Butter · Butyrospermum Parkii Butter

General function
A rich, solid plant butter used for heavy conditioning on coarse or dry hair. High in the list it makes a product decidedly heavy.

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 suitDry, coarse, or high-porosity hair
Coarse, porous hair loses water quickly and can carry the weight; a butter slows that loss more than a thin oil does.

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.

May suitVery dry or highly damaged hair
A solid fat melts onto the strand at body temperature and stays there, which is the heaviest surface moisture-holding a formula can offer.
- butter
- emollient
- sealant
13 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 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
Gums thicken and set soft, which gives definition that bends rather than a rigid cast.

May suitFrizz-prone, damaged, or high-friction hair
Cationic conditioners bind to the negatively charged damaged cuticle, laying it flat and cutting the friction that causes combing breakage.

May suitMaximum-hold styling
A styling polymer dries into a film across the strands, which is what makes a shape hold instead of relax.
- conditioning agent
- polymer
- gum
14 Hydrolyzed Quinoa

General function
A quinoa-derived protein used for light strengthening and colour retention claims.

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
Filling 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 styling
Film 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 hair
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.
- film former
- protein
- hydrolysed protein
15 Panthenol

General function
Provitamin B5. It draws in water and penetrates the strand a little, which is why it is the standard ingredient for softness and shine claims.

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
It hydrates without adding oil or a film, which is the combination fine hair usually needs.

May suitFrizz-prone, damaged, or high-friction hair
Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.

May suitVery dry or highly damaged hair
A humectant that also penetrates the cuticle, so it holds water inside the strand rather than only on the surface.

PubChem
- humectant
- conditioning agent
- vitamin
16 Tocopheryl Acetate
- antioxidant
- vitamin
17 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
18 Magnesium Aluminum Silicate

General function
A clay thickener that suspends particles and gives creams their body.

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
Absorbs oil and adds texture, which is what gives fine hair grip at the root instead of slip.

PubChem
- clay
- thickener
19 Butylene Glycol

General function
A light humectant and carrier that helps extracts dissolve.

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 hydrates without contributing weight.

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
20 Bis-Pca Dimethicone

General function
A silicone. Silicones coat the strand for slip, shine and frizz control; unless the name carries PEG or PPG, removing one takes a detergent rather than water.

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 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.
- silicone
- conditioning agent
21 Disodium Peg-12 Dimethicone Sulfosuccinate

General function
A fatty ester. Esters give slip and a smooth after-feel; lighter ones read dry and silky, heavier ones read rich.

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 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.
- mild anionic cleanser
- emollient
- light ester
- silicone
- water-soluble silicone
22 Aminomethyl Propanol

General function
A base used in trace amounts to neutralise acidic hold polymers so they thicken and set properly.

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.

DependsFrizz-prone, damaged, or high-friction hair
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.

PubChem
- pH adjuster
23 Chlorphenesin
- preservative
24 BHT
- antioxidant
25 Ethylhexylglycerin

General function
A preservative booster that also adds a little softness. Almost always paired with phenoxyethanol.

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.

PubChem
- preservative
- emollient
26 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 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 suitBuild-up-sensitive routines
Holds hard-water minerals in solution so they rinse away instead of depositing on the hair.

May suitFrizz-prone, damaged, or high-friction hair
The 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 hair
Where a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.

International Journal of Trichology
- pH adjuster
- hard-water chelator
27 Phenoxyethanol
- preservative
28 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
29 Violet External 2 (CI 60730)

What the whole list adds up to

10 emollients
3 solvents
3 thickeners
3 conditioning agents
3 silicones
3 conditioning agents
3 humectants
3 preservatives
2 fatty alcohols
2 light esters
2 cleansers
2 oils
2 butters
2 vitamins

Ingredient list captured 2026-09-05. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 8 oz

Seen at $44 1 store · checked Sep 5

Good value under $14 Under $1.71/oz it costs less than three-quarters of the 7 products we score as doing the same job

Priced above the products that do the same job. Stores sell it above the $14 line; products that do this job typically go for about $15 at this size.

Show the price ladder

Price for 8 ozlower is better

Where we’ve seen it1 listing · 1 store

amika (loveamika.com)
$44.00

8 oz · $5.50/oz

Sep 5Lowest 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 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 $44 is the price we have observed for the 8 oz. We need three stores before we call a price commonly seen.
Good value under $14 comes from the 7 products we score as doing the same job as this one. A quarter of them cost less than $1.71/oz; at 8 oz that is $14. Under that line you are paying less than most of them.
About $15 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 8 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

5 products that do the same job cost less per ounce
Costs more per ounce than 73% of the 347 masks and treatments we’ve priced
No rich emollients in the formula
Reviewers mention 3 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.

CHILowest cost per oz Tea Tree Oil Revitalizing Masque $1.60/oz $3.90/oz less · Close function

Function: Film formers
Also: Masstige tier

Compare

Camille RoseClose function Coconut Water Penetrating Hair Treatment $1.87/oz $3.63/oz less

Function: Film formers
Also: Masstige tier

Compare

RuskClose function Deepshine Color Repair Restorative Masque $1.81/oz $3.69/oz less

Rich
Alcohol-free
Quick

Function: Hard-water defence
Film formers
Also: 5.3 oz bottle
Sold online

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

Final decision

Should you buy it?

Good for the right person

Best user

People who want maximum slip who want real detangling slip and moisture that stays in

Biggest tradeoff

Not ideal for anyone sensitive to fragrance, curly-method routines, or oily scalps and fine hair

Best alternative if not

Consider CHI Tea Tree Oil Revitalizing Masque, 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.

SupportedBacked by ingredients

Partly supportedSome supporting logic

Stated by brandNo clear evidence

Potential conflictFormula works against claim

8x more conditioned, 2.2x stronger with 56% less breakage

A brand-run study. We report it as stated and do not repeat the number as fact.

—

Stated by brand

Only the brand’s testing shows this.

significantly brighten, intensely hydrate, strengthen + repair hair

Humectants or rich emollients sit in the first eight ingredients.

Cetyl Alcohol
Isopropyl Myristate
Cetearyl Alcohol

Supported

Helps hair feel hydrated.

clinically proven to be safe for color-treated hair

A brand-run study. We report it as stated and do not repeat the number as fact.

—

Stated by brand

Only the brand’s testing shows this.

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.

Many reviewers describe their hair feeling noticeably softer and stronger with regular use of the mask.

customers using it as a periodic treatment on blonde or highlighted hair

Several reviewers highlight that the mask leaves hair feeling deeply hydrated rather than just coated or waxy.

customers with dry or damaged blonde-toned hair

Reviewers consistently report the mask visibly reduces brassy or yellow tones and keeps blonde or silver hair looking bright.

customers with blonde, silver, gray or highlighted hair

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.
4 sources consulted for this product (1 manufacturer or regulatory, 2 retailer, 1 editorial), last checked 2026-09-05.
Ingredient references are linked for 13 of 22 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 2026-09-05.

Bust Your Brass Toning + Strength Repair Mask

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, against what the formula shows

What people report

More from amika

How this page was made

Your personalized hair plan