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Side by side

Kerastase Resistance Fondant Extentioniste Conditioner vs Rusk Puremix Activated Charcoal Purifying Conditioner

91% function match · 8 of the 10 functions we compared match Formula overlap 57%. Kerastase Resistance Fondant Extentioniste Conditioner and Rusk Puremix Activated Charcoal Purifying Conditioner 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.

  • Resistance Fondant Extentioniste Conditioner — protein-sensitive hair
  • Puremix Activated Charcoal Purifying Conditioner — protein-sensitive 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
Kerastase Resistance Fondant Extentioniste Conditioner — 6.8 oz container Kerastase

Resistance Fondant Extentioniste Conditioner

  • Conditioner
  • Prestige
  • Sulfate-free
  • Silicone-free
Rusk Puremix Activated Charcoal Purifying Conditioner — 12 oz container Rusk

Puremix Activated Charcoal Purifying Conditioner

  • Conditioner
  • Masstige
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$34.99 6.8 oz · $5.15/oz
$16.44 12 oz · $1.37/oz
Value / price positioning
Same job for less elsewhere $$$$$ Prestige tier · costs more than 91% of the 698 conditioners we’ve priced
Priced with its peers $$$$$ Masstige tier · costs less than 56% of the 698 conditioners 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 Same
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
Oils and butters Differs
Low Oils are present, but low enough to be a finishing touch. Your hair
None No oils or butters in the list. 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
Light Water-first and light: unlikely to flatten fine hair. 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 Same
None No protein or amino acids in the list. Your hair
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Same
None Nothing here needs a detergent wash to remove. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
Moderate Your hair
Moderate Your hair
Hard-water defence Same
None No chelating agent in the list. 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
  • Protein-sensitive hairthat stiffens when protein is added
  • 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
  • Protein-sensitive hairthat stiffens when protein is added
  • 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
Why you might skip it
  • Scents bother youthis product carries a scent
  • Hair that needs proteinthere is none in this list
  • Dry or very humid airwhere heavy humectants work against you
  • Scents bother youthis product carries a scent
  • Hair that needs proteinthere is none in this list
  • 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
Conditioner
Conditioner
Where to buy
Brand website · Salons
Brand website
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Cruelty-free
Not cruelty-free · PETA-listed
Cruelty-free · label 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

IngredientResistance Fondant Extentioniste ConditionerPuremix Activated Charcoal Purifying Conditioner
Water
Neutral
#1Leading
#1Leading
Cetearyl Alcohol
Softens
#2Leading
#2Leading
Glycerin
Moisturizes
#8Below the 1% line
#4Supporting
Polyquaternium-37
Detangles
#12Below the 1% line
#7Supporting
Phenoxyethanol
Stabilizes
#9Below the 1% line
#8Below the 1% line
Fragrance
Fragrance
#32Below the 1% line
#9Below the 1% line

What only one of them carries

Resistance Fondant Extentioniste Conditioner

Puremix Activated Charcoal Purifying Conditioner

Full ingredient list — Resistance Fondant Extentioniste Conditioner (32)
Full ingredient list — Puremix Activated Charcoal Purifying Conditioner (12)

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.

VerdictsResistance Fondant Extentioniste ConditionerPuremix Activated Charcoal Purifying Conditioner
Supported
1
4
Partly supported
2
0
Stated by brand
1
3
Potential conflict
0
0

Resistance Fondant Extentioniste Conditioner

  • supports longer and healthier hairStated by brandCan’t be confirmed from label.
  • reduces breakagePartly supportedSupports the surface, not a treatment.
  • seals split endsPartly supportedSupports the surface, not a treatment.
  • a creamy and lightweight conditioner that detangles and softens strands, while strengthening and improving moisture retentionSupportedHelps hair feel hydrated.

Puremix Activated Charcoal Purifying Conditioner

  • sulfate-freeSupportedGentler on colour and coils.
  • paraben-freeSupportedPreserved without parabens.
  • silicone-freeSupportedNothing that needs a strong wash.
  • no artificial colorantsStated by brandCan’t be confirmed from label.
  • gluten-freeStated by brandCan’t be confirmed from label.
  • cruelty-freeSupportedMatches our researched record.
  • made in USAStated by brandCan’t be confirmed from label.

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.

$1.37/oz vs $5.15/oz — Kerastase Resistance Fondant Extentioniste Conditioner costs about 3.8× more per ounce than Rusk Puremix Activated Charcoal Purifying Conditioner.

$0.09/oz median $1.60/oz $56.25/oz $5.15/oz Resistance Fondant Extenti $1.37/oz Puremix Activated Charcoal

Every mark sits on one distribution because these are compared against the same set: 698 conditioners with a computable unit price.

Value readResistance Fondant Extentioniste ConditionerPuremix Activated Charcoal Purifying Conditioner
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Priced with its peersSits in the middle of the range for conditioners 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.

Resistance Fondant Extentioniste Conditioner vs Extreme Length Conditioner for Longer Stronger HairRedken · 100% function matchPuremix Activated Charcoal Purifying Conditioner vs Guava Protect & Repair ConditionerCeremonia · 93% function matchResistance Fondant Extentioniste Conditioner vs Maui Moisture Curl Quench + Coconut Oil Conditioner for Thick, Curly HairMaui Moisture · 93% function matchPuremix Activated Charcoal Purifying Conditioner vs Purifying Conditioner Gelée with Sea MineralsChristophe Robin · 93% function matchResistance Fondant Extentioniste Conditioner vs Advanced Therapy Anti-Hair Thinning ConditionerPura d'or · 93% function matchPuremix Activated Charcoal Purifying Conditioner vs Sea Any Tangles 3-Way Pre & Post Poo ConditionerWatch & Sea · 92% function matchResistance Fondant Extentioniste Conditioner vs Kids Curly Hair ConditionerAveeno · 92% function matchPuremix Activated Charcoal Purifying Conditioner vs Daily Moisturizing ConditionerAmerican Crew · 92% function match

Resistance Fondant Extentioniste Conditioner · Puremix Activated Charcoal Purifying Conditioner · All conditioners 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.
  • 8 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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