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Side by side

amika Bust Your Brass Cool Blonde Strength Repair Shampoo vs amika The Kure Strength Repair Shampoo

74% function match · 9 of the 13 functions we compared match Formula overlap 39%. amika Bust Your Brass Cool Blonde Strength Repair Shampoo and amika The Kure Strength Repair Shampoo share 4 ingredients among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • Bust Your Brass Cool Blonde Strength Repair Shampoo — colour-treated hair
  • The Kure Strength Repair Shampoo — colour-treated hair

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
amika Bust Your Brass Cool Blonde Strength Repair Shampoo — 9.2 oz container amika

Bust Your Brass Cool Blonde Strength Repair Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Moisture-rich
amika The Kure Strength Repair Shampoo — 9.2 oz container amika

The Kure Strength Repair Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$29 9.2 oz · $3.15/oz
$29 9.2 oz · $3.07/oz
Value / price positioning
Priced above most shampoos $$$$$ Salon tier · costs more than 77% of the 817 shampoos we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 76% of the 817 shampoos we’ve priced
Best for hair types
Curly–Coily A heavy formula: coarse, curlier strands carry it without flattening. Your hair
Curly–Coily A heavy formula: coarse, curlier strands carry it without flattening. Your hair
Moisture level Differs
High Humectants near the top — water-binding is a headline mechanism here. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Cleansing strength Differs
Gentle Removes light dirt and oil without stripping. Your hair
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Slip / detangling Same
Moderate Conditioning agents are present, lower in the list. Your hair
Moderate Conditioning agents are present, lower in the list. Your hair
Weight on hair
Rich Heavy butters and waxes in the first eight ingredients. Your hair
Rich Heavy butters and waxes in the first eight ingredients. Your hair
Fragrance
Present Fragrance is listed; it sits below the working ingredients. Your hair
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Same
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Silicone / wax buildup Same
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
High Your hair
Moderate Your hair
Expected lather Same
High Thick foam that spreads quickly through the hair. Your hair
High Thick foam that spreads quickly through the hair. Your hair
Scalp active Same
None No over-the-counter scalp active. Your hair
None No over-the-counter scalp active. Your hair
Hard-water defence Same
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Colour-treated hairthat fades faster in a sulfate wash
  • Frequent washerswho want gentler cleansing
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Hard waterand swimmers dealing with mineral deposit
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Hard waterand swimmers dealing with mineral deposit
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Oily scalp or fine hairthat gets weighed down
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Oily scalp or fine hairthat gets weighed down
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Shampoo
Shampoo
Line
Bust Your Brass
—
Where to buy
Brand website
Target
Free of
  • sulfate-free
  • sulfate-free
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

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

The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientBust Your Brass Cool Blonde Strength Repair ShampooThe Kure Strength Repair Shampoo
Aminomethyl Propanol
pH balancer
#1Leading
#18Below the 1% line
Benzoic Acid
Stabilizes
#2Leading
#36Below the 1% line
Benzyl Alcohol
Stabilizes
#3Leading
#32Below the 1% line
Benzyl Benzoate
Fragrance
#4Below the 1% line
#38Below the 1% line
Bis-Pca Dimethicone
Buildup
#5Below the 1% line
#19Below the 1% line
Borago Officinalis (Borage) Seed Oil
Softens
#6Below the 1% line
#9Below the 1% line
Butylene Glycol
Moisturizes
#7Below the 1% line
#20Below the 1% line
Butyrospermum Parkii (Shea) Butter
Heavy
#8Below the 1% line
#12Below the 1% line
Disodium Peg-12 Dimethicone Sulfosuccinate
Buildup
#15Below the 1% line
#22Below the 1% line
Fragrance
Fragrance
#17Below the 1% line
#37Below the 1% line
Hydrolyzed Quinoa
Protein
#21Below the 1% line
#17Below the 1% line
Hydroxycitronellal
Fragrance
#22Below the 1% line
#39Below the 1% line
Water
Neutral
#46Below the 1% line
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#42Below the 1% line
#2Leading
Full ingredient list — Bust Your Brass Cool Blonde Strength Repair Shampoo (46)
Full ingredient list — The Kure Strength Repair Shampoo (40)

Claims check

What each brand says, against what each formula shows

Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.

VerdictsBust Your Brass Cool Blonde Strength Repair ShampooThe Kure Strength Repair Shampoo
Supported
1
0
Partly supported
0
2
Stated by brand
1
1
Potential conflict
0
0

Bust Your Brass Cool Blonde Strength Repair Shampoo

  • Achieve your brightest and healthiest blonde while you washStated by brandCan’t be confirmed from label.
  • Strengthens, repairs, and hydrates dry, damaged strands while toning yellow, brassy huesSupportedHelps hair feel hydrated.

The Kure Strength Repair Shampoo

  • Strengthen hair with keratin and wheat proteinPartly supportedSupports the surface, not a treatment.
  • Gently clean and deeply conditionStated by brandCan’t be confirmed from label.
  • Repair environmental damagePartly supportedSupports the surface, not a treatment.

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Amika The Kure Strength Repair Shampoo draws complaints about the packaging.

Bust Your Brass Cool Blonde Strength Repair Shampoo

Often first tried on a hairstylist's recommendation

salon-referred customers

Rated by several reviewers as better than other purple-toning shampoos they had tried previously

reviewers with prior purple-shampoo experience

Leaves hair soft and smooth despite the toning function, a common weak point for purple shampoos

blonde-hair reviewers

Effectively neutralizes brassy/yellow tones in blonde or lightened hair

blonde/color-treated reviewers

The Kure Strength Repair Shampoo

Reviewers describe the formula as gentle and safe for color-treated and chemically treated hair

color-treated/chemically treated hair

Strong overall satisfaction, reviewers describe it as fixing hair damage, high star ratings (83 percent five-star)

Reviewers report visibly stronger, less damaged hair and reduced breakage after repeated use

Reviewers report noticeable improvement in overall hair health and condition with continued use

Isolated shipping/packaging complaint (opened conditioner bottle), not a product-performance complaint

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$3.07/oz vs $3.15/oz — within about the same cost per ounce.

$0.00/oz median $1.48/oz $17.29/oz $3.15/oz Bust Your Brass Cool Blond $3.07/oz The Kure Strength Repair S

Every mark sits on one distribution because these are compared against the same set: 817 shampoos with a computable unit price.

Value readBust Your Brass Cool Blonde Strength Repair ShampooThe Kure Strength Repair Shampoo
Label
Priced above most shampoosCosts more per ounce than most shampoos; nothing in our library matches it closely for less.
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

Bust Your Brass Cool Blonde Strength Repair Shampoo vs BLONDE.ANGEL.WASHKevin Murphy · 81% function matchThe Kure Strength Repair Shampoo vs Coconut & Shea Nourishing ShampooMarc Anthony · 98% function matchBust Your Brass Cool Blonde Strength Repair Shampoo vs Miracle Brightening Shampoo for BlondesIt's a 10 · 74% function matchThe Kure Strength Repair Shampoo vs Hydration ShampooPattern Beauty · 96% function matchBust Your Brass Cool Blonde Strength Repair Shampoo vs Fine Hair ShampooOuai · 74% function matchThe Kure Strength Repair Shampoo vs Argan Oil Hydrating ShampooMarc Anthony · 94% function matchBust Your Brass Cool Blonde Strength Repair Shampoo vs Pureology Hydrate ShampooPureology · 73% function matchThe Kure Strength Repair Shampoo vs Clean Beauty Hydrate ShampooPaul Mitchell · 94% function match

Bust Your Brass Cool Blonde Strength Repair Shampoo · The Kure Strength Repair Shampoo · All shampoos in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • 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.
  • 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.
  • 9 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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