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Side by side

American Crew Anti-Dandruff + Dry Scalp Shampoo vs Kerastase Kerastase Specifique Bain Divalent Shampoo

98% function match · 9 of the 10 functions we compared match Formula overlap 0%. American Crew Anti-Dandruff + Dry Scalp Shampoo and Kerastase Kerastase Specifique Bain Divalent Shampoo share no ingredient among each other's most prominent — which does not stop them doing the same job.

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.

  • Anti-Dandruff + Dry Scalp Shampoo — fast-oiling scalps
  • Kerastase Specifique Bain Divalent Shampoo — 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
American Crew Anti-Dandruff + Dry Scalp Shampoo — brand photograph American Crew

Anti-Dandruff + Dry Scalp Shampoo

  • Shampoo
  • Masstige
Kerastase Kerastase Specifique Bain Divalent Shampoo — 16.9 oz container Kerastase

Kerastase Specifique Bain Divalent Shampoo

  • Shampoo
  • Prestige
  • Silicone-free
  • Protein-free
Price, size & price per ounce
$16–18 8.4 oz · $2.02/oz
$70 16.9 oz · $3.46/oz

Compared at different sizes — 16.9 oz against 8.4 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Upper-mid price for a shampoo $$$$$ Masstige tier · costs more than 63% of the 805 shampoos we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 80% of the 805 shampoos 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
Moderate Humectants in the working part of the formula. 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
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
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
Low Your hair
Low Your hair
Weight on hair
—
Light Water-first and light: unlikely to flatten fine hair. Your hair
Protein
—
None No protein or amino acids in the list. 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
—
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
  • Fast-oiling scalpsthat need a real reset wash
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Fine hairthat flattens under most products
Why you might skip it
  • Scents bother youthis product carries a scent
  • Sulfate-free routinesit uses a sulfate detergent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Scents bother youthis product carries a scent
  • Sulfate-free routinesit uses a sulfate detergent
  • 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
Where to buy
Brand website
Salons · Amazon · Lookfantastic
Free of
—
  • silicone-free
  • protein-free
Cruelty-free
—
Not cruelty-free · PETA-listed
Scent
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

IngredientAnti-Dandruff + Dry Scalp ShampooKerastase Specifique Bain Divalent Shampoo
Water
Neutral
#2Leading
#2Leading
Citric Acid
pH balancer
#7Below the 1% line
#28Below the 1% line
Fragrance
Fragrance
#17Below the 1% line
#30Below the 1% line

What only one of them carries

Anti-Dandruff + Dry Scalp Shampoo

Kerastase Specifique Bain Divalent Shampoo

Full ingredient list — Anti-Dandruff + Dry Scalp Shampoo (19)
Full ingredient list — Kerastase Specifique Bain Divalent Shampoo (30)

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.

VerdictsAnti-Dandruff + Dry Scalp ShampooKerastase Specifique Bain Divalent Shampoo
Supported
0
1
Partly supported
0
0
Stated by brand
4
2
Potential conflict
0
0

Anti-Dandruff + Dry Scalp Shampoo

  • Relieves irritating itchStated by brandCan’t be confirmed from label.
  • Helps prevent dandruff and dry scalpStated by brandSoothing, not an active treatment.
  • No Trace of Flakes from Dandruff or Dry ScalpStated by brandSoothing, not an active treatment.
  • Soothing scalp itchiness and irritationStated by brandCan’t be confirmed from label.

Kerastase Specifique Bain Divalent Shampoo

  • A cleansing and balancing shampoo that reduces sebum and hydrates to leave hair clean and glossy.SupportedHelps hair feel hydrated.
  • 97% agree shampoo deeply cleanses hair & scalpStated by brandOnly the brand’s testing shows this.
  • 97% agree shampoo does not weigh hair downStated by brandOnly the brand’s testing shows this.

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.

Anti-Dandruff + Dry Scalp Shampoo

Delivers immediate dandruff and dry scalp relief from very first use.

Product has pleasant fragrance that is strong enough to notice but not overpowering.

Effectively controls dandruff itching and other scalp irritation issues.

Kerastase Specifique Bain Divalent Shampoo

Frequently professionally recommended - several reviewers say a hairdresser suggested the product, and describe using it as a periodic reset shampoo alternated with their regular one rather than a daily-only product.

salon-referred customers

Reviewers with color-treated, curly or wavy hair report improved manageability, control and shine alongside the oil control benefit, not just scalp cleansing.

colored / curly hair reviewers

Effective at reducing scalp oiliness/greasiness with regular use without over-stripping hair, though several reviewers note results build gradually rather than instantly.

reviewers with oily scalp / fine or thick hair

Works well specifically for the oily-roots/dry-ends combination pattern (dual-action balancing), a distinct use case from a purely oily-all-over scalp.

oily roots + dry/color-grown-out ends

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.

$2.02/oz vs $3.46/oz — Kerastase Kerastase Specifique Bain Divalent Shampoo costs about 1.7× more per ounce than American Crew Anti-Dandruff + Dry Scalp Shampoo.

$0.00/oz median $1.47/oz $17.29/oz $2.02/oz Anti-Dandruff + Dry Scalp $3.46/oz Kerastase Specifique Bain

Every mark sits on one distribution because these are compared against the same set: 805 shampoos with a computable unit price.

Value readAnti-Dandruff + Dry Scalp ShampooKerastase Specifique Bain Divalent Shampoo
Label
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.
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.

Anti-Dandruff + Dry Scalp Shampoo vs Fiber Pre-Styling ShampooAmerican Crew · 99% function matchKerastase Specifique Bain Divalent Shampoo vs Volume Injection ShampooRedken · 100% function matchAnti-Dandruff + Dry Scalp Shampoo vs Elvive Collagen Peptide + Lifter Volumizing Shampoo for Thin, Flat HairL'Oreal Paris Elvive · 99% function matchKerastase Specifique Bain Divalent Shampoo vs Extreme Length ShampooRedken · 98% function matchAnti-Dandruff + Dry Scalp Shampoo vs TRESemme Healthy Volume ShampooTRESemme · 98% function matchKerastase Specifique Bain Divalent Shampoo vs Elvive Collagen Peptide + Lifter Volumizing Shampoo for Thin, Flat HairL'Oreal Paris Elvive · 98% function matchAnti-Dandruff + Dry Scalp Shampoo vs Volume Injection ShampooRedken · 98% function matchKerastase Specifique Bain Divalent Shampoo vs A Curl Can Dream Weightless Moisture ShampooMatrix · 98% function match

Anti-Dandruff + Dry Scalp Shampoo · Kerastase Specifique Bain Divalent 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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