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Side by side

Nioxin Nioxin Scalp + Hair Thickening System 3 Shampoo vs ORS Olive Oil Professional Neutralizing Shampoo

95% function match · 10 of the 11 functions we compared match Formula overlap 19%. Nioxin Nioxin Scalp + Hair Thickening System 3 Shampoo and ORS Olive Oil Professional Neutralizing Shampoo 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.

  • Nioxin Scalp + Hair Thickening System 3 Shampoo — fragrance-free
  • Olive Oil Professional Neutralizing 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
Nioxin Scalp + Hair Thickening System 3 Shampoo — front of package Nioxin

Nioxin Scalp + Hair Thickening System 3 Shampoo

  • Shampoo
  • Salon
  • Silicone-free
  • Fragrance-free
ORS Olive Oil Professional Neutralizing Shampoo — brand photograph ORS

Olive Oil Professional Neutralizing Shampoo

  • Shampoo
  • Masstige
Price, size & price per ounce
$27 10.1 oz · $2.67/oz
$8.46 33.8 oz · $0.27/oz

Compared at different sizes — 33.8 oz against 10.1 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Upper-mid price for a shampoo $$$$$ Salon tier · costs more than 71% of the 817 shampoos we’ve priced
Lower cost than most shampoos $$$$$ Masstige tier · costs less than 98% 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
Low Humectants appear, but low enough to be a minor part. Your hair
Low Humectants appear, but low enough to be a minor part. 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 Same
Moderate Conditioning agents are present, lower in the list. Your hair
Moderate Conditioning agents are present, lower in the list. 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
Low Your hair
Low 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
Complete for its job
Who should choose this
  • Fragrance-freeno fragrance (parfum) on the label — scented
  • Fast-oiling scalpsthat need a real reset wash
  • Hard waterand swimmers dealing with mineral deposit
  • Fine hairthat flattens under most products
  • Fast-oiling scalpsthat need a real reset wash
  • Hard waterand swimmers dealing with mineral deposit
Why you might skip it
  • Scents bother youthis product carries a strong scent
  • Sulfate-free routinesit uses a sulfate detergent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Scents bother youthis product carries a scent
  • Sulfate-free routinesit uses a sulfate detergent
  • Dry or damaged haira strong detergent system strips as it cleans
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
Ulta · Manufacturer · Amazon
Brand website
Free of
  • silicone-free
  • fragrance-free
—
Cruelty-free
Not cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Mint & herbalStrong
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

IngredientNioxin Scalp + Hair Thickening System 3 ShampooOlive Oil Professional Neutralizing Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium Laureth Sulfate
Cleanses
#2Leading
#6Supporting

What only one of them carries

Nioxin Scalp + Hair Thickening System 3 Shampoo

Olive Oil Professional Neutralizing Shampoo

Full ingredient list — Nioxin Scalp + Hair Thickening System 3 Shampoo (40)
Full ingredient list — Olive Oil Professional Neutralizing Shampoo (33)

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.

VerdictsNioxin Scalp + Hair Thickening System 3 ShampooOlive Oil Professional Neutralizing Shampoo
Supported
0
3
Partly supported
0
1
Stated by brand
3
1
Potential conflict
0
0

Nioxin Scalp + Hair Thickening System 3 Shampoo

  • 85% of consumers noticed a thickening effectStated by brandOnly the brand’s testing shows this.
  • Clinically proven thicker, fuller hairStated by brandOnly the brand’s testing shows this.
  • Visible results in just 30 daysStated by brandCan’t be confirmed from label.

Olive Oil Professional Neutralizing Shampoo

  • removes calcium build-upSupportedResets a coated scalp.
  • rinses easilySupportedComes out in a normal wash.
  • aids in storing moisture to hairPartly supportedSome hydration, at a low level.
  • removes all traces of relaxer from hair and scalpStated by brandCan’t be confirmed from label.
  • adds natural shine to hairSupportedReflects light for visible shine.

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.

Nioxin Nioxin Scalp + Hair Thickening System 3 Shampoo draws complaints about dryness.

Nioxin Scalp + Hair Thickening System 3 Shampoo

Stylists and repeat buyers report visible thickness/growth results and reorder for salon clients

stylist/salon users, repeat buyers

Some reviewers with sensitive/eczema-prone scalps report it calms irritation without over-drying

sensitive/eczema-prone scalp users

Used as a clarifying prep step ahead of conditioner/treatment for color-treated hair, leaves hair feeling clean

color-treated-hair users

A minority report dryness or shedding with regular use, particularly fine-haired users

fine-hair users

Strong minty/menthol scent noted, refreshing to most, strong for some

general users

Olive Oil Professional Neutralizing Shampoo

Reviewers repeatedly praise the pleasant scent and say it leaves hair smooth, soft and shiny after a relaxer service.

Reviewers describe the shampoo's color-changing indicator (pink turning white as it neutralizes) as visible confirmation the relaxer has been fully removed.

Long-time users repeatedly say they have relied on this neutralizing shampoo for years and remain satisfied with how thoroughly it clears relaxer residue from the scalp.

Several reviewers say the large bottle is good value and that they have used the product loyally for years or decades.

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.

$0.27/oz vs $2.67/oz — Nioxin Nioxin Scalp + Hair Thickening System 3 Shampoo costs about 9.9× more per ounce than ORS Olive Oil Professional Neutralizing Shampoo.

$0.00/oz median $1.48/oz $17.29/oz $2.67/oz Nioxin Scalp + Hair Thicke $0.27/oz Olive Oil Professional Neu

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

Value readNioxin Scalp + Hair Thickening System 3 ShampooOlive Oil Professional Neutralizing Shampoo
Label
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.
Lower cost than most shampoosCosts less per ounce than most shampoos we have researched.

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.

Nioxin Scalp + Hair Thickening System 3 Shampoo vs Nioxin Scalp + Hair Thickening System 4 ShampooNioxin · 100% function matchOlive Oil Professional Neutralizing Shampoo vs Gentle Clarifying ShampooMixed Chicks · 95% function matchNioxin Scalp + Hair Thickening System 3 Shampoo vs Therappe Moisture ShampooNexxus · 96% function matchOlive Oil Professional Neutralizing Shampoo vs His Mix Shine-Starter Clarifying ShampooMixed Chicks · 95% function matchNioxin Scalp + Hair Thickening System 3 Shampoo vs Elevate Weightless Volume ShampooRusk · 96% function matchOlive Oil Professional Neutralizing Shampoo vs Therappe Moisture ShampooNexxus · 95% function matchNioxin Scalp + Hair Thickening System 3 Shampoo vs Color Protect ShampooPaul Mitchell · 94% function matchOlive Oil Professional Neutralizing Shampoo vs Moisture Milks Moisturizing Shampoo - Strawberries and CreamVO5 · 95% function match

Nioxin Scalp + Hair Thickening System 3 Shampoo · Olive Oil Professional Neutralizing 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.
  • 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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