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Side by side

Biolage Scalp Sync Purifying & Exfoliating Concentrate vs Divi Scalp Serum

99% function match · 6 of the 6 functions we compared match Formula overlap 7%. Biolage Scalp Sync Purifying & Exfoliating Concentrate and Divi Scalp Serum share 1 ingredient 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
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When each one is the right call

What each formula is built for, from its own ingredient list.

  • Scalp Sync Purifying & Exfoliating Concentrate — vegan and cruelty-free
  • Scalp Serum — protein-hungry 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
Biolage Scalp Sync Purifying & Exfoliating Concentrate — container, alternate view Biolage

Scalp Sync Purifying & Exfoliating Concentrate

  • Scalp treatment
  • Salon
Divi Scalp Serum — 1.01 oz container Divi

Scalp Serum

  • Scalp treatment
  • Prestige
Price, size & price per ounce
$26–29 6.8 oz · $4.13/oz
$48 1.01 oz · $47.53/oz

Compared at different sizes — 6.8 oz against 1.01 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Priced with its peers $$$$$ Salon tier · costs less than 69% of the 154 scalp treatments we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 99% of the 154 scalp 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 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
Slip / detangling Same
Little Nothing here is built to reduce combing force. Your hair
Little Nothing here is built to reduce combing force. Your hair
Fragrance
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
Protein
—
Prominent Protein high in the list — a strengthening formula, not a moisture one. Your hair
Oils and butters Same
None No oils or butters in the list. Your hair
None No oils or butters in the list. Your hair
Hard-water defence
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
—
Formula completeness
out of 10
A simple formula
out of 10
A simple formula
Who should choose this
  • Vegan and cruelty-freeour researched record has it as both
  • Protein-hungry hairthat stretches and stays stretched when wet
  • Vegan and cruelty-freeour researched record has it as both
Why you might skip it
  • 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
  • Scents bother youthis product carries a scent
  • Protein-sensitive hairthat goes stiff or straw-like on protein
  • 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
Scalp treatment
Scalp treatmentserum
Where to buy
Salons · Grocery / mass
Brand website
Vegan
Vegan · label states
Vegan · label states
Cruelty-free
Cruelty-free · label states
Cruelty-free · label states
Scent
Scented, not described
—
How often
weekly
—

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.

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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

IngredientScalp Sync Purifying & Exfoliating ConcentrateScalp Serum
Water
Neutral
#1Leading
#1Leading
Glycerin
Moisturizes
#16Below the 1% line
#2Leading

What only one of them carries

Scalp Sync Purifying & Exfoliating Concentrate

Scalp Serum

Full ingredient list — Scalp Sync Purifying & Exfoliating Concentrate (21)
Full ingredient list — Scalp Serum (32)

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.

VerdictsScalp Sync Purifying & Exfoliating ConcentrateScalp Serum
Supported
1
3
Partly supported
0
0
Stated by brand
3
1
Potential conflict
0
0

Scalp Sync Purifying & Exfoliating Concentrate

  • Exfoliates and clarifies scalp after one useStated by brandCan’t be confirmed from label.
  • Removes buildup, excess oil, impurities, and dead skinStated by brandCan’t be confirmed from label.
  • Suitable for sensitive scalps and color-treated hairStated by brandCan’t be confirmed from label.
  • Soothes and hydrates scalp for up to 72 hoursSupportedHelps hair feel hydrated.

Scalp Serum

  • VeganSupportedMatches our researched record.
  • Cruelty-FreeSupportedMatches our researched record.
  • Paraben-FreeSupportedPreserved without parabens.
  • Made in the U.S.A. with globally sourced ingredientsStated 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.

Biolage Scalp Sync Purifying & Exfoliating Concentrate draws complaints about irritation.

Scalp Sync Purifying & Exfoliating Concentrate

several reviewers with dry, itchy or eczema-affected scalps report significant relief after weeks of consistent use

reviewers with chronic dry/itchy scalp conditions

many reviewers with oily or buildup-prone scalps say it visibly reduces oil and extends time between washes when used weekly

reviewers with oily scalp, often paired with the matching shampoo/conditioner

reviewers repeatedly describe the texture as very thin and watery, making it hard to control and easy to overuse or spill

general reviewers

a recurring caution among reviewers is the product's sun-sensitivity warning, which several found off-putting or worrying for summer use

reviewers noting the AHA sun-sensitivity label

several reviewers who did not see results for dandruff or oiliness still praised the scent and the ritual feel of the pre-wash step

reviewers unconvinced of efficacy but positive on sensory experience

Scalp Serum

Reviewers frequently describe a fresh, tingly, invigorating feeling on the scalp right after application.

general reviewers

Texture reports diverge: some reviewers say it leaves no residue and doesn't feel greasy, while others describe it as oily and hard to keep on the scalp, running down the head instead.

general reviewers

The scent divides reviewers: several say they love it, while others describe it as strong, medicinal or unpleasant, particularly when it mixes with sweat.

general reviewers, opinions split

Reports of visible hair-growth results or reduced shedding are inconsistent — some reviewers see new growth or less hair in the drain within weeks, while others using it for several months (their third or fourth bottle) report no visible change.

reviewers with varying lengths of use, one describing a child's slow-growth patch

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.

$4.13/oz vs $47.53/oz — Divi Scalp Serum costs about 12× more per ounce than Biolage Scalp Sync Purifying & Exfoliating Concentrate.

$1.25/oz median $7.19/oz $55.03/oz $4.13/oz Scalp Sync Purifying & Exf $47.53/oz Scalp Serum

Every mark sits on one distribution because these are compared against the same set: 154 scalp treatments with a computable unit price.

Value readScalp Sync Purifying & Exfoliating ConcentrateScalp Serum
Label
Priced with its peersSits in the middle of the range for scalp treatments 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.

Scalp Sync Purifying & Exfoliating Concentrate vs Daily Hydro Scalp Serum with Hyaluronic AcidAct+Acre · 99% function matchScalp Serum vs Restoring Hair & Edge Drops XLCÉCRED · 99% function matchScalp Sync Purifying & Exfoliating Concentrate vs The Treatment Scalp SerumKilgourMD · 99% function matchScalp Serum vs 4% Niacinamide Scalp Serum for Oily Scalp + HairAct+Acre · 99% function matchScalp Sync Purifying & Exfoliating Concentrate vs Restoring Hair & Edge Drops XLCÉCRED · 99% function matchScalp Serum vs Scalp-Serum: Cooling Greens Exfoliating Scalp TreatmentBread Beauty Supply · 99% function matchScalp Sync Purifying & Exfoliating Concentrate vs 4% Niacinamide Scalp Serum for Oily Scalp + HairAct+Acre · 99% function matchScalp Serum vs ProGrowth + Peptide Hair Strengthening Scalp SerumOGX · 93% function match

Scalp Sync Purifying & Exfoliating Concentrate · Scalp Serum · All scalp 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.
  • 12 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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