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Side by side

Coco & Eve Tripeptide Hair Density Serum vs Dr. Groot Scalp Revitalizing Solution Hair Thickening Roll-On Serum

92% function match · 6 of the 7 functions we compared match Formula overlap 12%. Coco & Eve Tripeptide Hair Density Serum and Dr. Groot Scalp Revitalizing Solution Hair Thickening Roll-On Serum 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.

  • Tripeptide Hair Density Serum — fragrance-free
  • Scalp Revitalizing Solution Hair Thickening Roll-On Serum — flaking scalps

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
Coco & Eve Tripeptide Hair Density Serum — 2.03 oz container Coco & Eve

Tripeptide Hair Density Serum

  • Scalp treatment
  • Salon
  • Sulfate-free
  • Silicone-free
Dr. Groot

Scalp Revitalizing Solution Hair Thickening Roll-On Serum

  • Scalp treatment
  • Salon
Price, size & price per ounce
$35 2.03 oz · $17.24/oz
$26 0.5 oz · $52.00/oz

Compared at different sizes — 2.03 oz against 0.5 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Upper-mid price for a scalp treatment $$$$$ Salon tier · costs more than 71% of the 154 scalp treatments we’ve priced
Same job for less elsewhere $$$$$ Salon 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 Differs
Little Nothing here is built to reduce combing force. Your hair
Some Some slip, mostly from esters or silicones rather than conditioners. Your hair
Weight on hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
—
Fragrance
None listed No fragrance is listed. Your hair
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein
Minor Protein appears, low enough to be a supporting ingredient. 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
Low Your hair
Oils and butters Same
Present, lower down Oils are present, but low enough to be a finishing touch. Your hair
Present, lower down Oils are present, but low enough to be a finishing touch. 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
A simple formula
out of 10
A simple formula
Who should choose this
  • Fragrance-freeno fragrance (parfum) on the label
  • Unscentedfree of strong smells
  • Fine hairthat flattens under most products
  • Silicone-free routinesno silicones appear in the list
  • Flaking scalpsthis carries an over-the-counter active
Why you might skip it
  • Dry or very humid airwhere heavy humectants work against you
  • Tight budgetsit sits in the upper price tiers
  • If scent matters to younothing is added 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
Scalp treatmentserum
Scalp treatmentserum
Where to buy
Brand website
Brand website
Free of
  • sulfate-free
  • silicone-free
  • fragrance-free
  • curly-method compatible
—
Vegan
Vegan · label states
—
Cruelty-free
Cruelty-free · label states
—
Scent
Unscented
Scented, not described
How often
every wash
as needed

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

IngredientTripeptide Hair Density SerumScalp Revitalizing Solution Hair Thickening Roll-On Serum
Water
Neutral
#1Leading
#1Leading
Butylene Glycol
Moisturizes
#2Leading
#13Below the 1% line
Glycerin
Moisturizes
#3Leading
#14Below the 1% line
1,2-Hexanediol
Moisturizes
#6Below the 1% line
#39Below the 1% line
Caffeine
Active
#7Below the 1% line
#33Below the 1% line
Sodium Benzoate
Stabilizes
#26Below the 1% line
#42Below the 1% line
PEG-40 Hydrogenated Castor Oil
Stabilizes
#10Below the 1% line
#8Supporting

What only one of them carries

Tripeptide Hair Density Serum

Scalp Revitalizing Solution Hair Thickening Roll-On Serum

Full ingredient list — Tripeptide Hair Density Serum (27)
Full ingredient list — Scalp Revitalizing Solution Hair Thickening Roll-On Serum (80)

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.

VerdictsTripeptide Hair Density SerumScalp Revitalizing Solution Hair Thickening Roll-On Serum
Supported
5
0
Partly supported
0
0
Stated by brand
1
0
Potential conflict
0
0

Tripeptide Hair Density Serum

  • Clinically-proven for thinning hair and excess sheddingStated by brandOnly the brand’s testing shows this.
  • VeganSupportedMatches our researched record.
  • Cruelty freeSupportedMatches our researched record.
  • Silicone freeSupportedNothing that needs a strong wash.
  • Paraben freeSupportedPreserved without parabens.
  • Sulfate freeSupportedGentler on colour and coils.

Scalp Revitalizing Solution Hair Thickening Roll-On Serum

No claims recorded for this product beyond the ones above.

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.

$17.24/oz vs $52.00/oz — Dr. Groot Scalp Revitalizing Solution Hair Thickening Roll-On Serum costs about 3× more per ounce than Coco & Eve Tripeptide Hair Density Serum.

$1.25/oz median $7.19/oz $55.03/oz $17.24/oz Tripeptide Hair Density Se $52.00/oz Scalp Revitalizing Solutio

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

Value readTripeptide Hair Density SerumScalp Revitalizing Solution Hair Thickening Roll-On Serum
Label
Upper-mid price for a scalp treatmentSits 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.

Tripeptide Hair Density Serum vs Argan Stem Cell Age Defying Scalp IntensiveAndalou Naturals · 96% function matchScalp Revitalizing Solution Hair Thickening Roll-On Serum vs Hair Renew Pre Wash TreatmentInnersense Organic Beauty · 99% function matchTripeptide Hair Density Serum vs Hair Restore Advanced Growth Support SerumNeutrogena · 95% function matchScalp Revitalizing Solution Hair Thickening Roll-On Serum vs Mineral Detox Pre-Shampoo RinseKristin Ess · 92% function matchTripeptide Hair Density Serum vs Lock Drops Anti-Shedding Scalp & Hair SerumBondi Boost · 95% function matchScalp Revitalizing Solution Hair Thickening Roll-On Serum vs GRO Scalp Detoxifying SerumVegamour · 92% function matchTripeptide Hair Density Serum vs Hair Renew Daily Active SerumInnersense Organic Beauty · 95% function matchScalp Revitalizing Solution Hair Thickening Roll-On Serum vs No.0.5 Scalp Longevity TreatmentOlaplex · 88% function match

Tripeptide Hair Density Serum · Scalp Revitalizing Solution Hair Thickening Roll-On 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.
  • 6 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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