Skip to main content

Side by side

Nioxin Hair Fall Defense Serum vs Nioxin Scalp Purifying Exfoliator

80% function match · 6 of the 10 functions we compared match Formula overlap 6%. Nioxin Hair Fall Defense Serum and Nioxin Scalp Purifying Exfoliator share 2 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.

  • Hair Fall Defense Serum — protein-sensitive hair
  • Scalp Purifying Exfoliator — 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
Nioxin Hair Fall Defense Serum — front of package Nioxin

Hair Fall Defense Serum

  • Scalp treatment
  • Prestige
  • Sulfate-free
  • Silicone-free
Nioxin Scalp Purifying Exfoliator — front of package Nioxin

Scalp Purifying Exfoliator

  • Scalp treatment
  • Salon
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$28.04 2.3 oz · $16.97/oz
$21–27 1.69 oz · $15.98/oz
Value / price positioning
Upper-mid price for a scalp treatment $$$$$ Prestige tier · costs more than 71% of the 154 scalp treatments we’ve priced
Upper-mid price for a scalp treatment $$$$$ Salon tier · costs more than 68% 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 Differs
None found No humectants found — nothing here pulls water into the hair. Your hair
Low Humectants appear, but low enough to be a minor part. 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 Same
Light Water-first and light: unlikely to flatten fine hair. Your 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
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Same
None No protein or amino acids in the list. Your hair
None No protein or amino acids in the list. 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
Moderate Your hair
Oils and butters Differs
None No oils or butters in the list. Your hair
Present, lower down Oils are present, but low enough to be a finishing touch. Your hair
Hard-water defence Same
None No chelating agent in the list. Your hair
None No chelating agent in the list. Your hair
Formula completeness
out of 10
A simple formula
out of 10
Covers the core
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Fine hairthat flattens under most products
  • Silicone-free routinesno silicones appear in the list
  • Protein-sensitive hairthat stiffens when protein is added
  • Fine hairthat flattens under most products
  • Silicone-free routinesno silicones appear in the list
  • Easy to findsold through several channels
Why you might skip it
  • Scents bother youthis product carries a scent
  • Very dry or damaged hairit contains fast-drying alcohol
  • Vegan and cruelty-freeour record does not support both claims here
  • Scents bother youthis product carries a scent
  • Very dry or damaged hairit contains fast-drying alcohol
  • Vegan and cruelty-freeour record does not support both claims here
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 treatment
Where to buy
Salons · Specialty beauty
Brand website · Salons · Amazon
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Cruelty-free
Not cruelty-free · PETA-listed
Not cruelty-free · PETA-listed
Scent
Scented, not described
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.

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

IngredientHair Fall Defense SerumScalp Purifying Exfoliator
Alcohol Denat.
Drying
#13Below the 1% line
#41Below the 1% line
Water
Neutral
#2Leading
#1Leading
Niacinamide
Detangles
#3Leading
#29Below the 1% line
Fragrance
Fragrance
#6Below the 1% line
#13Below the 1% line
PEG-40 Hydrogenated Castor Oil
Stabilizes
#8Below the 1% line
#10Below the 1% line
Hexyl Cinnamal
Fragrance
#11Below the 1% line
#26Below the 1% line
Limonene
Fragrance
#12Below the 1% line
#27Below the 1% line
Citric Acid
pH balancer
#16Below the 1% line
#4Below the 1% line
Linalool
Fragrance
#14Below the 1% line
#25Below the 1% line

What only one of them carries

Hair Fall Defense Serum

Scalp Purifying Exfoliator

Full ingredient list — Hair Fall Defense Serum (16)
Full ingredient list — Scalp Purifying Exfoliator (53)

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.

VerdictsHair Fall Defense SerumScalp Purifying Exfoliator
Supported
1
0
Partly supported
0
0
Stated by brand
0
1
Potential conflict
0
0

Hair Fall Defense Serum

  • Free of parabens, sulfates, and colorantsSupportedGentler on colour and coils.

Scalp Purifying Exfoliator

  • FOR INSTANT FLAKE REMOVALStated by brandSoothing, not an active treatment.

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.

Both praised for a clean rinse-out. Nioxin Hair Fall Defense Serum draws complaints about the scent.

Hair Fall Defense Serum

Several users find the serum light and non-greasy, with little residue on the hair.

US exact serum reviews; IDs1145071764 and1145071763; duplicate syndicated copies excluded.

A strong cologne-like fragrance is a recurring reason users dislike or discontinue the serum.

US exact-product reviewer accounts; promotional sampling appears in the corpus. Review IDs: 1221842646, 1220405157, 1194007192, 1193887057, 1165028641

Some reviewers report no noticeable improvement from the serum.

US exact-product reviewer accounts; promotional sampling appears in the corpus. Review IDs: 1145071947, 1145071837; corroborated by additional exact serum review1145071763.

Scalp Purifying Exfoliator

Users describe a cleaner scalp with less product buildup after use.

Exact Ulta Scalp Purifying Exfoliator PDP, separate 21-review corpus. Three direct US review bodies plus critical excerpt; excluded EMEA-syndicated salon/dermabrasion reviews. Direct US bodies are about three years old; no claims of medical efficacy imported.

The small tube is a recurring drawback, with users wanting more product for scalp coverage.

Exact Ulta Scalp Purifying Exfoliator PDP, separate 21-review corpus. Three direct US review bodies plus critical excerpt; excluded EMEA-syndicated salon/dermabrasion reviews. Direct US bodies are about three years old; no claims of medical efficacy imported.

Flake removal varies; some users report clear improvement while others still have flakes after treatment.

Exact Ulta Scalp Purifying Exfoliator PDP, separate 21-review corpus. Three direct US review bodies plus critical excerpt; excluded EMEA-syndicated salon/dermabrasion reviews. Direct US bodies are about three years old; no claims of medical efficacy imported.

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.

$15.98/oz vs $16.97/oz — within about the same cost per ounce.

$1.25/oz median $7.19/oz $55.03/oz $16.97/oz Hair Fall Defense Serum $15.98/oz Scalp Purifying Exfoliator

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

Value readHair Fall Defense SerumScalp Purifying Exfoliator
Label
Upper-mid price for a scalp treatmentSits in the middle of the range for scalp treatments per ounce.
Upper-mid price for a scalp treatmentSits in the middle of the range for scalp treatments per ounce.

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.

Hair Fall Defense Serum vs Peppermint & Aloe Soothing Scalp TonicDesign Essentials · 99% function matchScalp Purifying Exfoliator vs No.0.5 Scalp Longevity TreatmentOlaplex · 88% function matchHair Fall Defense Serum vs 100% Raw and Pure Batana OilSunny Isle · 99% function matchScalp Purifying Exfoliator vs Royal Oils Instant Soothe Scalp ElixirHead & Shoulders · 85% function matchHair Fall Defense Serum vs Hair & Scalp Oil With Vitamin ETaliah Waajid · 99% function matchScalp Purifying Exfoliator vs Balance Collection Scalp ExfoliatorTGIN · 85% function matchHair Fall Defense Serum vs Men's REVIVE+ Densifying Treatment FoamBosley · 92% function matchScalp Purifying Exfoliator vs Lavender Lychee Scalp Lightweight Soothing Scalp and Hair RefresherMielle · 83% function match

Hair Fall Defense Serum · Scalp Purifying Exfoliator · 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.

Still unsure? Take your consultation or browse more products.

Your personalized hair plan

Tell us what’s going on with your hair, see what we understand, and get a plan built around it — with the reason behind every recommendation.

Free to start · $49.00 for your consultation and hair profile · No subscription · Nothing you must buy

Start your consultation