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Side by side

Dove Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) vs Najeau Nourishing Shampoo

91% function match · 9 of the 11 functions we compared match Formula overlap 52%. Dove Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) and Najeau Nourishing Shampoo 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
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When each one is the right call

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

  • Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) — colour-treated hair
  • Nourishing Shampoo — fast-oiling 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
Dove

Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)

  • Shampoo
  • Drugstore
  • Sulfate-free
  • Moisture-rich
Najeau Nourishing Shampoo — brand photograph Najeau

Nourishing Shampoo

  • Shampoo
  • Salon
Price, size & price per ounce
$9.97 16 oz · $0.62/oz
about $42 10 oz · $4.20/oz
Value / price positioning
Lower cost than most shampoos $$$$$ Drugstore tier · costs less than 84% of the 817 shampoos we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 88% of the 817 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
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
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 Differs
Moderate Conditioning agents are present, lower in the list. 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
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
—
Protein
Minor Protein appears, low enough to be a supporting ingredient. Your hair
—
Silicone / wax buildup Same
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
Moderate 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 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
Complete for its job
out of 10
Covers the core
Who should choose this
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Hard waterand swimmers dealing with mineral deposit
  • Fast-oiling scalpsthat need a real reset wash
  • Hard waterand swimmers dealing with mineral deposit
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • Vegan and cruelty-freeour researched record has it as both
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Dry or damaged haira strong detergent system strips as it cleans
  • Dry or damaged haira strong detergent system strips as it cleans
  • Stretching wash dayswaxes stay until a detergent wash removes them
  • 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
Shampoo
Shampoo
Where to buy
Grocery / mass
Brand website
Free of
  • sulfate-free
—
Vegan
Vegan · label states
Vegan · label states
Cruelty-free
Cruelty-free · label states
Cruelty-free · label states
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

IngredientDerma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)Nourishing Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#2Leading
#2Leading
Sodium Chloride
Stabilizes
#4Supporting
#5Supporting
Glycerin
Moisturizes
#5Supporting
#4Supporting

What only one of them carries

Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)

Nourishing Shampoo

Full ingredient list — Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) (27)
Full ingredient list — Nourishing Shampoo (18)

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.

VerdictsDerma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)Nourishing Shampoo
Supported
2
3
Partly supported
0
0
Stated by brand
3
3
Potential conflict
0
0

Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)

  • Reinforces thin, brittle hair with our sulfate-free shampoo and conditioner system, enriched with GlycerinSupportedGentler on colour and coils.
  • Strengthen fragile hair with a dermatologist-developed shampoo that reinforces strands and helps prevent breakageStated by brandOnly the brand’s testing shows this.
  • Purify the scalp without stripping essential oilsSupportedResets a coated scalp.
  • Formulas specially designed to promote effective scalp care, developed with dermatologistsStated by brandOnly the brand’s testing shows this.
  • Leads to thicker, stronger, and fuller-looking hair from root to tipStated by brandNot something a label can show.

Nourishing Shampoo

  • Balances and restores hair and scalpStated by brandCan’t be confirmed from label.
  • Gentle daily cleanser that doesn't strip natural moistureSupportedHelps hair feel hydrated.
  • Removes buildup without strippingSupportedResets a coated scalp.
  • Hypoallergenic and dermatologist testedStated by brandOnly the brand’s testing shows this.
  • Free of parabens, sulfates, phthalates, artificial dyes/fragrancesStated by brandCan’t be confirmed from label.
  • Suitable for all hair types; color-safe, vegan, cruelty-freeSupportedMatches our researched record.

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.

Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)

Reviewers report their hair looks and feels more voluminous and has more body after switching to this shampoo

general Walmart reviewers

Reviewers describe the scalp feeling deeply cleansed with only a mild, non-overpowering scent

general Walmart/Influenster reviewers

Several reviewers say the shampoo does not lather much on the first wash but builds a strong lather on a second wash

general Walmart reviewers, including an every-other-day washer with oily hair

Nourishing Shampoo

No review themes researched for this product yet.

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.

$0.62/oz vs $4.20/oz — Najeau Nourishing Shampoo costs about 6.8× more per ounce than Dove Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line).

$0.00/oz median $1.48/oz $17.29/oz $0.62/oz Derma Scalp Density Boost $4.20/oz Nourishing Shampoo

Every mark sits on one distribution because these are compared against the same set: 817 shampoos with a computable unit price.

Value readDerma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line)Nourishing Shampoo
Label
Lower cost than most shampoosCosts less per ounce than most shampoos we have researched.
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.

Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) vs Dove Beauty Derma Scalp Density Boost Volumizing ShampooDove · 100% function matchNourishing Shampoo vs Dove Beauty Derma Scalp Density Boost Volumizing ShampooDove · 91% function matchDerma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) vs Argan Oil Hydrating ShampooMarc Anthony · 93% function matchNourishing Shampoo vs The Scalp Restore Shampoo - Jojoba + AloeRaw Sugar · 86% function matchDerma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) vs SMOOTH.AGAIN.WASHKevin Murphy · 93% function matchNourishing Shampoo vs Big Volume Weightless Lift ShampooMarc Anthony · 86% function matchDerma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) vs Strictly Curls 3x Moisture ShampooMarc Anthony · 91% function matchNourishing Shampoo vs Caviar Anti-Aging Restructuring Bond Repair ShampooAlterna Haircare · 86% function match

Derma Scalp Density Boost Shampoo with Glycerin and Zinc + Peptides for Hair Loss and Breakage (Scalp + Hair Therapy Sulfate-Free Density Boost line) · Nourishing 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.
  • 3 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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