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Side by side

amika Bust Your Brass Cool Blonde Strength Repair Shampoo vs amika Normcore Signature Shampoo

39% function match · 4 of the 13 functions we compared match Formula overlap 16%. amika Bust Your Brass Cool Blonde Strength Repair Shampoo and amika Normcore Signature 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
  • Normcore Signature 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 Normcore Signature Shampoo — 9.2 oz container amika

Normcore Signature Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$29 9.2 oz · $3.15/oz
$27 9.2 oz · $2.93/oz
Value / price positioning
Priced above most shampoos $$$$$ Salon tier · costs more than 77% of the 817 shampoos we’ve priced
Upper-mid price for a shampoo $$$$$ Salon tier · costs more than 74% 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
All types Nothing in the formula or the claims narrows this to one pattern. 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 Same
Gentle Removes light dirt and oil without stripping. Your hair
Gentle Removes light dirt and oil without stripping. 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
Light Water-first and light: unlikely to flatten fine hair. 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 Differs
Minor Protein appears, low enough to be a supporting ingredient. Your hair
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Differs
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
High Your hair
Moderate Your hair
Expected lather Differs
High Thick foam that spreads quickly through the hair. Your hair
Moderate An ordinary shampoo lather. 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 Differs
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
None No chelating agent in the list. 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
  • Protein-sensitive hairthat stiffens when protein is added
  • Frequent washerswho want gentler cleansing
  • Dry, thirsty hairhumectants and emollients both sit up front
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
  • Heavy product buildupthis is not a clarifying wash
  • A squeaky-clean feelthis deliberately leaves conditioning behind
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
Normcore
Where to buy
Brand website
Brand website
Free of
  • sulfate-free
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
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 ShampooNormcore Signature Shampoo
Benzyl Benzoate
Fragrance
#4Below the 1% line
#1Leading
Fragrance
Fragrance
#17Below the 1% line
#9Below the 1% line
Hydroxycitronellal
Fragrance
#22Below the 1% line
#15Below the 1% line
Citric Acid
pH balancer
#10Below the 1% line
#3Leading
Cocamidopropyl Betaine
Cleanses
#11Below the 1% line
#4Supporting
Limonene
Fragrance
#25Below the 1% line
#16Below the 1% line

What only one of them carries

Bust Your Brass Cool Blonde Strength Repair Shampoo

Normcore Signature Shampoo

Full ingredient list — Bust Your Brass Cool Blonde Strength Repair Shampoo (46)
Full ingredient list — Normcore Signature Shampoo (23)

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 ShampooNormcore Signature Shampoo
Supported
1
1
Partly supported
0
0
Stated by brand
1
2
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.

Normcore Signature Shampoo

  • Visibly improves scalp conditionStated by brandCan’t be confirmed from label.
  • Gently cleanses scalp and hairStated by brandCan’t be confirmed from label.
  • Fatty acids weightlessly hydrate and revive dullnessSupportedHelps hair feel hydrated.

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.

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

Normcore Signature Shampoo

Switchers from other salon brands (e.g. Ouai) report hair feeling healthier and shinier after switching

brand-switchers, straight-hair reviewers

Hair feels noticeably cleaner and less oily at the scalp, letting reviewers stretch time between washes

reviewers with oily scalp, several hair types (straight/wavy/coily)

Long-term repeat purchasers, some reporting 5+ years of continuous use

long-term customers

Used as part of a wash routine paired with amika Perk Up Plus dry shampoo to extend days between washes

oily-scalp reviewers

Travel-size portions called out as convenient for carry-on air travel

travel-focused reviewers

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.

$2.93/oz vs $3.15/oz — within about the same cost per ounce.

$0.00/oz median $1.47/oz $17.29/oz $3.15/oz Bust Your Brass Cool Blond $2.93/oz Normcore Signature Shampoo

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 ShampooNormcore Signature Shampoo
Label
Priced above most shampoosCosts more per ounce than most shampoos; nothing in our library matches it closely for less.
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.

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 matchNormcore Signature Shampoo vs Advanced Therapy Anti-Hair Thinning ShampooPura d'or · 96% function matchBust Your Brass Cool Blonde Strength Repair Shampoo vs The Kure Strength Repair Shampooamika · 74% function matchNormcore Signature Shampoo vs Daily Workout Shampoo with Watermelon & Blood OrangeAcure · 95% function matchBust Your Brass Cool Blonde Strength Repair Shampoo vs Miracle Brightening Shampoo for BlondesIt's a 10 · 74% function matchNormcore Signature Shampoo vs Mirrorball High Shine Protect Antioxidant Shampooamika · 93% function matchBust Your Brass Cool Blonde Strength Repair Shampoo vs Fine Hair ShampooOuai · 74% function matchNormcore Signature Shampoo vs Ocean Surf Repair & Refresh ShampooAlba Botanica · 93% function match

Bust Your Brass Cool Blonde Strength Repair Shampoo · Normcore Signature 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.
  • 10 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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