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Side by side

R+Co BLONDED BRIGHTENING SHAMPOO vs R+Co CASSETTE Curl Defining Shampoo

48% function match · 5 of the 13 functions we compared match Formula overlap 13%. R+Co BLONDED BRIGHTENING SHAMPOO and R+Co CASSETTE Curl Defining 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.

  • BLONDED BRIGHTENING SHAMPOO — colour-treated hair
  • CASSETTE Curl Defining 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
R+Co BLONDED BRIGHTENING SHAMPOO — 8.5 oz container R+Co

BLONDED BRIGHTENING SHAMPOO

  • Shampoo
  • Prestige
  • Sulfate-free
  • Silicone-free
R+Co CASSETTE Curl Defining Shampoo — brand photograph R+Co

CASSETTE Curl Defining Shampoo

  • Shampoo
  • Prestige
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
about $49 8.5 oz · $5.77/oz
$34 8.5 oz · $4.00/oz
Value / price positioning
Same job for less elsewhere $$$$$ Prestige tier · costs more than 97% of the 817 shampoos we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 85% of the 817 shampoos we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Wavy–Coily The brand’s own claims name curly or textured hair. Your hair
Moisture level Differs
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Moderate Humectants in the working part of the formula. Your hair
Cleansing strength Same
Strong Removes oil, buildup, and most residue — a reset wash. 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
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. 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
None Nothing here needs a detergent wash to remove. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Low 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 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
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Colour-treated hairthat fades faster in a sulfate wash
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Hard waterand swimmers dealing with mineral deposit
Why you might skip it
  • Scents bother youthis product carries a scent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Dry or very humid airwhere heavy humectants work against you
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Dry or damaged haira strong detergent system strips as it cleans
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
—
CASSETTE Curl Defining
Where to buy
Brand website
Brand website · Sephora
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
  • protein-free
Vegan
Vegan · brand states
Vegan · brand states
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

IngredientBLONDED BRIGHTENING SHAMPOOCASSETTE Curl Defining Shampoo
Water
Neutral
#1Leading
#1Leading
Glycerin
Moisturizes
#4Supporting
#22Below the 1% line
Sodium Lauroyl Sarcosinate
Cleanses
#5Supporting
#5Supporting
Phenoxyethanol
Stabilizes
#6Below the 1% line
#10Below the 1% line
Fragrance
Fragrance
#7Below the 1% line
#11Below the 1% line

What only one of them carries

BLONDED BRIGHTENING SHAMPOO

CASSETTE Curl Defining Shampoo

Full ingredient list — BLONDED BRIGHTENING SHAMPOO (41)
Full ingredient list — CASSETTE Curl Defining Shampoo (67)

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.

VerdictsBLONDED BRIGHTENING SHAMPOOCASSETTE Curl Defining Shampoo
Supported
1
0
Partly supported
0
0
Stated by brand
1
1
Potential conflict
0
0

BLONDED BRIGHTENING SHAMPOO

  • Neutralize unwanted yellow tones with a highly buildable, antioxidant-rich, pigmented toning formulaStated by brandCan’t be confirmed from label.
  • Gently cleanses, moisturizes and helps repair color-treated hair as it nourishes and helps protect against future yellowingSupportedLess fade per wash.

CASSETTE Curl Defining Shampoo

  • This curl-enhancing shampoo is designed to gently cleanse while maintaining and defining the shape of your curlStated by brandCan’t be confirmed from label.

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.

BLONDED BRIGHTENING SHAMPOO

Some long-term users (multi-year, multi-month use on both natural and extension hair) report consistent brassiness control without over-toning to blue/purple cast

reviewers using it on extensions or graying hair

Widely praised by reviewers with blonde, gray, or white hair for neutralizing yellow/brassy tones, including balayage and highlighted hair

blonde/gray/white and highlighted hair

Reviewers note it has a thick, sudsy texture that's easy to work through hair

general user

Praised generally as a top pick among purple/blue toning shampoos by reviewers who report trying multiple competing brands

comparison shoppers

CASSETTE Curl Defining Shampoo

Enhances curl definition and reduces frizz, often used paired with the matching conditioner

3a-type and wavy/curly reviewers

Small amount needed per wash, seen as good value/efficient use even for long hair

long-hair reviewers

Frequently stylist-recommended and described as a long-term repeat purchase

multi-year repeat customers

Cleanses without stripping hair or scalp, even for dry/persistently dry hair types

wavy/curly hair reviewers, some long or thick hair

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.

$4.00/oz vs $5.77/oz — R+Co BLONDED BRIGHTENING SHAMPOO costs about 1.4× more per ounce than R+Co CASSETTE Curl Defining Shampoo.

$0.00/oz median $1.47/oz $17.29/oz $5.77/oz BLONDED BRIGHTENING SHAMPO $4.00/oz CASSETTE Curl Defining Sha

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

Value readBLONDED BRIGHTENING SHAMPOOCASSETTE Curl Defining Shampoo
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
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.

BLONDED BRIGHTENING SHAMPOO vs Blonde Purple ShampooSun Bum · 93% function matchCASSETTE Curl Defining Shampoo vs MORE LIFE Color Extending ShampooIGK Hair · 99% function matchBLONDED BRIGHTENING SHAMPOO vs Royal Treatment Color Gloss Blonde Enhancing Purple ShampooCHI · 91% function matchCASSETTE Curl Defining Shampoo vs TELEVISION Perfect Hair ShampooR+Co · 99% function matchBLONDED BRIGHTENING SHAMPOO vs Silk Therapy with Organic Coconut Oil Moisturizing ShampooBiosilk · 89% function matchCASSETTE Curl Defining Shampoo vs Goddess Strength Fortifying Shampoo With Castor OilCarol's Daughter · 99% function matchBLONDED BRIGHTENING SHAMPOO vs Nº.4P Blonde Enhancer Toning ShampooOlaplex · 89% function matchCASSETTE Curl Defining Shampoo vs Frizz Control ShampooMoroccanoil · 98% function match

BLONDED BRIGHTENING SHAMPOO · CASSETTE Curl Defining 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.
  • 11 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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