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Side by side

Moroccanoil Oily Scalp Treatment vs Sienna Naturals D.N.A. Scalp Serum for Thinning Hair

99% function match · 6 of the 6 functions we compared match Formula overlap 0%. Moroccanoil Oily Scalp Treatment and Sienna Naturals D.N.A. Scalp Serum for Thinning Hair 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
  • 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.

  • Oily Scalp Treatment — dry, thirsty hair
  • D.N.A. Scalp Serum for Thinning Hair — dry, thirsty 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
Moroccanoil Oily Scalp Treatment — container, alternate view Moroccanoil

Oily Scalp Treatment

  • Scalp treatment
  • Salon
  • Moisture-rich
Sienna Naturals

D.N.A. Scalp Serum for Thinning Hair

  • Scalp treatment
  • Salon
  • Moisture-rich
Price, size & price per ounce
$40–43 1.5 oz · $28.00/oz
$42 1 oz · $42.00/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 88% of the 154 scalp treatments we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 97% 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
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
Oils and butters Same
Present, high in the list Oils sit high in the list — a softening, coating formula. Your hair
Present, high in the list Oils sit high in the list — a softening, coating formula. 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
Covers the core
Who should choose this
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Vegan and cruelty-freeour researched record has it as both
Why you might skip it
  • Scents bother youthis product carries a scent
  • Dry or very humid airwhere heavy humectants work against you
  • Tight budgetsit sits in the upper price tiers
  • Dry or very humid airwhere heavy humectants work against you
  • Tight budgetsit sits in the upper price tiers
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 treatmentoil
Scalp treatmentserum
Where to buy
Brand website · Salons
Brand website · Specialty beauty
Vegan
—
Vegan · label states
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · label states
How often
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

IngredientOily Scalp TreatmentD.N.A. Scalp Serum for Thinning Hair
Water
Neutral
#1Leading
#1Leading
Butylene Glycol
Moisturizes
#5Supporting
#2Leading

What only one of them carries

Oily Scalp Treatment

D.N.A. Scalp Serum for Thinning Hair

Full ingredient list — Oily Scalp Treatment (25)
Full ingredient list — D.N.A. Scalp Serum for Thinning Hair (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.

VerdictsOily Scalp TreatmentD.N.A. Scalp Serum for Thinning Hair
Supported
0
0
Partly supported
0
0
Stated by brand
5
4
Potential conflict
0
0

Oily Scalp Treatment

  • 96% reported less grease/oils after 2 weeksStated by brandOnly the brand’s testing shows this.
  • 94% felt less oily scalpStated by brandOnly the brand’s testing shows this.
  • 92% experienced enhanced comfortStated by brandOnly the brand’s testing shows this.
  • 90% felt deeply cleansedStated by brandOnly the brand’s testing shows this.
  • 88% felt revitalizedStated by brandOnly the brand’s testing shows this.

D.N.A. Scalp Serum for Thinning Hair

  • Dermatologist TestedStated by brandOnly the brand’s testing shows this.
  • 90% experienced an increase in hair's density after 8 weeksStated by brandOnly the brand’s testing shows this.
  • 87% noticed hair appeared stronger after 8 weeksStated by brandOnly the brand’s testing shows this.
  • 87% noticed reduction in hair loss/shedding after 16 weeksStated 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.

Moroccanoil Oily Scalp Treatment draws complaints about hold and the price.

Oily Scalp Treatment

Many reviewers with oily scalps say it lets them stretch time between washes from every day to two or three days.

reviewers with oily/greasy scalps who wash frequently

Several reviewers describe a tingling or minty sensation on the scalp during and after application, which they read as a sign it is working.

general reviewers

Reviewers frequently praise the scent as pleasant, sometimes noting it is milder than plain tea tree oil they used previously.

general reviewers

A minority of reviewers report little or no noticeable reduction in oil after a full bottle or several weeks of use.

reviewers who did not see the expected result

Some reviewers feel the bottle is small for the price and worry about it not lasting long with regular use, especially on longer hair.

regular users and long-haired reviewers

D.N.A. Scalp Serum for Thinning Hair

Multiple customers report visible new growth, describing baby hairs and regrowth along the hairline/edges after consistent nightly use.

named customer testimonials featured on the brand's own product page

Customers dealing with postpartum or hormonal thinning, including fine bleached-blonde hair, report reduced shedding and a fuller feel within a few weeks of use.

customers who identified postpartum hair loss or fine, chemically lightened hair

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.

$28.00/oz vs $42.00/oz — Sienna Naturals D.N.A. Scalp Serum for Thinning Hair costs about 1.5× more per ounce than Moroccanoil Oily Scalp Treatment.

$1.25/oz median $7.19/oz $55.03/oz $28.00/oz Oily Scalp Treatment $42.00/oz D.N.A. Scalp Serum for Thi

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

Value readOily Scalp TreatmentD.N.A. Scalp Serum for Thinning Hair
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
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.

Oily Scalp Treatment vs Papaya Scalp ScrubCeremonia · 99% function matchD.N.A. Scalp Serum for Thinning Hair vs Papaya Scalp ScrubCeremonia · 99% function matchOily Scalp Treatment vs Scalp SerumPATTERN Beauty · 99% function matchD.N.A. Scalp Serum for Thinning Hair vs Nourish and Stimulate Scalp MaskMonpure · 96% function matchOily Scalp Treatment vs Nourish and Stimulate Scalp MaskMonpure · 96% function matchD.N.A. Scalp Serum for Thinning Hair vs Tripeptide Hair Density SerumCoco & Eve · 92% function matchOily Scalp Treatment vs Tripeptide Hair Density SerumCoco & Eve · 92% function matchD.N.A. Scalp Serum for Thinning Hair vs Scalp SerumPATTERN Beauty · 92% function match

Oily Scalp Treatment · D.N.A. Scalp Serum for Thinning Hair · 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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