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Side by side

Kerastase Blond Absolu Masque Ultra-Violet vs Redken Color Extend Blondage Express Anti-Brass Mask

70% function match · 6 of the 10 functions we compared match Formula overlap 60%. Kerastase Blond Absolu Masque Ultra-Violet and Redken Color Extend Blondage Express Anti-Brass Mask share 3 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.

  • Blond Absolu Masque Ultra-Violet — protein-sensitive hair
  • Color Extend Blondage Express Anti-Brass Mask — maximum slip

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
Kerastase Blond Absolu Masque Ultra-Violet — 6.8 oz container Kerastase

Blond Absolu Masque Ultra-Violet

  • Mask / treatment
  • Prestige
  • Sulfate-free
  • Silicone-free
Redken Color Extend Blondage Express Anti-Brass Mask — 8.5 oz container Redken

Color Extend Blondage Express Anti-Brass Mask

  • Mask / treatment
  • Salon
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$60 6.8 oz · $9.07/oz
$38 8.5 oz · $4.47/oz
Value / price positioning
Same job for less elsewhere $$$$$ Prestige tier · costs more than 90% of the 347 masks and treatments we’ve priced
Upper-mid price for a treatment $$$$$ Salon tier · costs more than 60% of the 347 masks and treatments we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Differs
Moderate Humectants in the working part of the formula. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Time on the hair
Short A few minutes on the hair before rinsing. Your hair
—
Slip / detangling Same
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Weight on hair Same
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
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Protein Differs
None No protein or amino acids in the list. Your hair
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Silicone / wax buildup Differs
None Nothing here needs a detergent wash to remove. Your hair
Low The silicones here are the water-soluble kind. Your hair
Clarifying wash needed
Low Your hair
Low Your hair
Oils and butters Same
Present, high in the list Oils sit high in the list — a softening, coating formula. Your hair
Moderate Oils sit high in the list — a softening, coating formula. Your hair
Formula completeness
out of 10
Covers the core
out of 10
Complete for its job
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Silicone-free routinesno silicones appear in the list
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
Why you might skip it
  • Scents bother youthis product carries a scent
  • Hair that needs proteinthere is none in this list
  • Vegan and cruelty-freeour record does not support both claims here
  • Scents bother youthis product carries a scent
  • Very dry or damaged hairit contains fast-drying alcohol
  • Dry or very humid airwhere heavy humectants work against you
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
Mask / treatment
Mask / treatmentcream
Where to buy
Target · Salons
Salons · Brand website · Grocery / mass
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • curly-method compatible
Cruelty-free
Not cruelty-free · PETA-listed
Not cruelty-free · PETA-listed
Scent
Floral
Scented, not described
Time on hair
5–10 min
—
How often
weekly
weekly
Treatment focus
toning
—

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

IngredientBlond Absolu Masque Ultra-VioletColor Extend Blondage Express Anti-Brass Mask
Water
Neutral
#1Leading
#1Leading
Cetearyl Alcohol
Softens
#2Leading
#2Leading
Paraffinum Liquidum/Mineral Oil/Huile Minerale
Heavy
#3Leading
#4Supporting
Fragrance
Fragrance
#6Below the 1% line
#6Below the 1% line
Citric Acid
pH balancer
#8Below the 1% line
#13Below the 1% line
Glycerin
Moisturizes
#15Below the 1% line
#5Supporting

What only one of them carries

Blond Absolu Masque Ultra-Violet

Color Extend Blondage Express Anti-Brass Mask

Full ingredient list — Blond Absolu Masque Ultra-Violet (21)
Full ingredient list — Color Extend Blondage Express Anti-Brass Mask (20)

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.

VerdictsBlond Absolu Masque Ultra-VioletColor Extend Blondage Express Anti-Brass Mask
Supported
0
0
Partly supported
1
0
Stated by brand
4
1
Potential conflict
0
0

Blond Absolu Masque Ultra-Violet

  • highly concentrated purple pigments neutralize yellow and brassy undertonesStated by brandCan’t be confirmed from label.
  • hyaluronic acid for internal strengtheningStated by brandCan’t be confirmed from label.
  • 91% more hydrated hair without greasy residueStated by brandOnly the brand’s testing shows this.
  • Edelweiss Flower antioxidant protection against pollution and UVPartly supportedIndirect help, not a filter.
  • customizable leave-in time (5-10 min) adjusts neutralization intensityStated by brandCan’t be confirmed from label.

Color Extend Blondage Express Anti-Brass Mask

  • Ultra-pigmented purple mask that neutralizes unwanted yellow tones in as little as 5 minutesStated 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.

Kerastase Blond Absolu Masque Ultra-Violet draws complaints about dryness and breakage.

Blond Absolu Masque Ultra-Violet

Neutralizes yellow/brassy tones and maintains highlighted blonde color

Exact official reviewers

Leaves blonde hair smooth, silky, hydrated, and healthier-looking

Exact product reviewers

Leaving it on too long can create silver/purple color or dryness/breakage

Exact product reviewer

Color Extend Blondage Express Anti-Brass Mask

Product has a strong fragrance described by reviewers as chemical or cheap cologne-like that lingers in hair after washing and drying.

Works effectively to neutralize brass and yellow tones on very light, platinum, or gray-silver hair when used as directed.

Does not dry out hair like purple shampoos, leaving it soft and manageable after use.

Reviewers experience inconsistent results with the product's ability to neutralize brass, with some achieving visible toning and others seeing no change despite multiple applications or extended contact times.

Reviewers report the violet pigment can deposit as unwanted pink or purple tones on some hair types, especially darker blonde, even when following the recommended timing.

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.

$4.47/oz vs $9.07/oz — Kerastase Blond Absolu Masque Ultra-Violet costs about 2× more per ounce than Redken Color Extend Blondage Express Anti-Brass Mask.

$0.19/oz median $3.49/oz $24.50/oz $9.07/oz Blond Absolu Masque Ultra- $4.47/oz Color Extend Blondage Expr

Every mark sits on one distribution because these are compared against the same set: 347 masks and treatments with a computable unit price.

Value readBlond Absolu Masque Ultra-VioletColor Extend Blondage Express Anti-Brass Mask
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Upper-mid price for a treatmentSits in the middle of the range for masks and treatments 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.

Blond Absolu Masque Ultra-Violet vs Brass Off Custom Neutralization MaskMatrix · 90% function matchColor Extend Blondage Express Anti-Brass Mask vs Color Extend Blondage Color-Depositing MaskRedken · 100% function matchBlond Absolu Masque Ultra-Violet vs Food For Soft Hair MaskMatrix · 85% function matchColor Extend Blondage Express Anti-Brass Mask vs Bond Building Pre-Shampoo TreatmentCoco & Eve · 75% function matchBlond Absolu Masque Ultra-Violet vs Born to Repair 60-Second Moisture Treatment with Shea ButterCarol's Daughter · 85% function matchColor Extend Blondage Express Anti-Brass Mask vs Blonded Brightening MasqueR+Co Bleu · 70% function matchBlond Absolu Masque Ultra-Violet vs Deepshine PlatinumX Repair TreatmentRusk · 85% function matchColor Extend Blondage Express Anti-Brass Mask vs Acidic Color Gloss Gloss-in-Mask For Shine & HydrationRedken · 67% function match

Blond Absolu Masque Ultra-Violet · Color Extend Blondage Express Anti-Brass Mask · All masks and treatments 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.
  • 7 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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