Scalp Therapy Itchy Scalp Shampoo
Shampoo / Clarifying, deep-cleaning
- Shampoo
- Sulfate-free
- Silicone-free
- Protein-free
- Not cruelty-free · PETA-listed
Scent:
The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.
“Provides a cooling sensation with feel-good peppermint fragrance known to enhance the senses.” — Brand page
Manufacturer page: neutrogena.com
Personal fit
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Your avoid-list
Priced with its peers
$1.03/oz at 12 oz — less than 65% of the 805 shampoos , which mostly run $0.81–3.01/oz.
Great for
Maybe skip if
What the formula actually does
Read from the label, not the marketing
Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.
Removes oil, buildup, and most residue — a reset wash.
Thick foam that spreads quickly through the hair.
Conditioning agents sit high in the list — this is a detangling formula.
Humectants in the working part of the formula.
Carries an over-the-counter scalp active, listed under Drug Facts.
No chelating agent in the list.
Nothing here needs a detergent wash to remove.
No protein or amino acids in the list.
Fragrance sits in the first eight ingredients — a larger share of the formula.
Ingredients that matter
The ingredients that change a decision
The workhorse ingredients plus anything lower down that changes a decision. These chips name what an ingredient does — they are not safety scores, and no ingredient here is rated good or bad on its own.
| Ingredient | What it does | Why it matters | Chip |
|---|---|---|---|
| Water | solvent | The base everything else is dissolved in | Neutral |
| Sodium C14-16 Olefin Sulfonate | olefin sulfonate cleanser | — | Cleanses |
| Cocamidopropyl Betaine | amphoteric cleanser | — | Cleanses |
| Sodium Chloride | salt | Thickens the formula | Stabilizes |
| Fragrance | fragrance | The scent | Fragrance |
| Polyquaternium-22 | film former | A supporting film former | Detangles |
| Sodium Citrate | pH adjuster | Fine-tunes the pH | pH balancer |
| Hexylene Glycol | solvent | Carrier for the rest of the formula | Moisturizes |
| Menthol | fragrance | The scent | Fragrance |
Full ingredient list (13)
US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Annotations keep three readings separate: the ingredient's general function, its role in this product type, and what its position can support.
-
1
Water
General function
The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
- solvent
-
2
Sodium C14-16 Olefin Sulfonate
General function
A strong non-sulfate detergent used in "sulfate-free" shampoos. It cleans about as thoroughly as a sulfate despite the label difference.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitBuild-up-sensitive routinesA strong detergent with no sulfate on the label. It removes deposited films about as completely as a sulfate does.
May not suitVery dry or highly damaged hairSulfate-free on the label is a naming fact, not a mildness one: this is an efficient detergent, and hair short of moisture can feel it.
- olefin sulfonate cleanser
- cleanser
-
3
Cocamidopropyl Betaine
General function
A mild coconut-derived co-cleanser that boosts foam and softens the effect of stronger detergents. It appears in most shampoos, gentle or not.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
Indian Journal of DermatologyMay suitDry, coarse, or high-porosity hairMild cleansing leaves more surface lubrication in place on hair that dries out quickly.
May not suitBuild-up-sensitive routinesThe mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.
DependsVery dry or highly damaged hairAmong the mildest detergents in use — it is what baby shampoos are built on — but it is almost always the second detergent in a formula. How much a wash strips is still decided by the primary detergent listed above it.
- amphoteric cleanser
- secondary cleanser
- cleanser
-
4
Sodium Chloride
General function
Table salt. In shampoo it is used to thicken the liquid, not to treat the hair.
Supporting ingredientPubChemListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- salt
- thickener
- ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
5
Fragrance
General function
An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- declared fragrance
-
6
Polyquaternium-22
General function
A conditioning polymer that adds slip and helps hold moisture on the strand.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitCurls or waves needing flexible holdCationic polymers hold a curl loosely and stay soft, which is why they turn up in definition products rather than firm-hold ones.
May suitFrizz-prone, damaged, or high-friction hairA cationic polymer stays on the hair through rinsing, which is what keeps static and combing friction down after the wash.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- film former
- polymer
- conditioning agent
-
7
Sodium Citrate
General function
Used with citric acid to hold the formula at a steady, slightly acidic pH. It also binds a little hard-water mineral.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitBuild-up-sensitive routinesBinds the calcium and magnesium in hard water, which is what stops mineral deposits accumulating on the strand wash after wash.
May suitGray, silver, or brass-prone hairCopper and iron carried in tap water deposit on the strand and read as a dull, warm cast on gray or light hair. A chelator holds those metals in solution so the wash carries them off.
DependsFrizz-prone, damaged, or high-friction hairpH adjusters are how a formula is brought to a chosen acidity, and an acidic formula keeps the cuticle lying flatter than an alkaline one. Which way this one moves the pH depends on the formula, and the finished pH is not on the label.
- pH adjuster
- hard-water chelator
-
8
Hexylene Glycol
General function
A solvent that keeps other ingredients dissolved and helps preservatives work.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitFine or easily flattened hairLight and water-binding rather than oily, so it hydrates without contributing weight.
May suitVery dry or highly damaged hairA small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.
DependsClimate-sensitive or frizz-prone hairA humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.
- solvent
- humectant
-
9
Sodium Lauroyl Sarcosinate
General function
A gentle cleanser that leaves a soft after-feel; often paired with stronger detergents.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitCurls or waves needing flexible holdThe detergent class most curl routines are built around: it lathers and cleanses without stripping the strand back to bare.
May suitDry, coarse, or high-porosity hairA gentler detergent leaves more of the surface oil that slows water loss from coarse or porous hair.
May suitVery dry or highly damaged hairCleanses with less sebum removal than a sulfate detergent, so hair that is short of moisture keeps more of it through the wash.
- mild anionic cleanser
- cleanser
-
10
Linoleamidopropyl PG-Dimonium Chloride Phosphate
General function
A conditioning agent that carries fatty acids onto the strand for slip without heaviness.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitFrizz-prone, damaged, or high-friction hairA cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.
May suitVery dry or highly damaged hairThe class that does the detangling in a conditioner. It deposits lubrication where the cuticle is worn.
DependsBuild-up-sensitive routinesSubstantive by design. A routine with no detergent wash gives it nothing to leave with.
- conditioning agent
-
11
Menthol
General function
Produces the cooling, tingling feeling on the scalp. The sensation is real; it is not evidence that anything else is happening.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- active
-
12
Citric Acid
General function
Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
International Journal of TrichologyMay suitBuild-up-sensitive routinesHolds hard-water minerals in solution so they rinse away instead of depositing on the hair.
May suitFrizz-prone, damaged, or high-friction hairThe acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.
May suitGray, silver, or brass-prone hairWhere a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.
- pH adjuster
- hard-water chelator
-
13
Sodium Hydroxide
General function
A strong base used in trace amounts to raise pH; fully neutralised in the finished product.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
International Journal of TrichologyDependsFrizz-prone, damaged, or high-friction hairThe alkali half of a pH-adjusting pair, used in small amounts to bring a formula up to its target rather than to make it alkaline. Alkaline conditions raise the fibre's surface charge and lift the scales — but the finished pH is not on the label.
- pH adjuster
What the whole list adds up to
- 3 cleansers
- 3 pH adjusters
- 2 solvents
- 2 fragrances
- 2 conditioning agents
- 2 hard-water chelators
- 1 olefin sulfonate cleanser
- 1 amphoteric cleanser
- 1 secondary cleanser
- 1 salt
- 1 thickener
- 1 declared fragrance
- 1 film former
- 1 polymer
Drug facts actives
- salicylic acid 2.5%
This product is an over-the-counter drug as well as a cosmetic. It treats a cosmetic scalp condition; it does not diagnose or treat disease.
Ingredient list captured 2026-09-11. Formulas change — check the package in your hand when an ingredient matters to you.
Price · 12 oz
Usually a good value. Most stores sell it under the $14 line, and products that do this job typically go for about $16 at this size.
Show the price ladder
Where we’ve seen it1 listing · 1 store
-
Target
$12.3912 oz · $1.03/ozSep 11Lowest per oz
Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.
How we work this out
- 12 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
- Seen at $12.39 is the price we have observed for the 12 oz. We need three stores before we call a price commonly seen.
- Good value under $14 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $1.16/oz; at 12 oz that is $14. Under that line you are paying less than most of them.
- About $16 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 12 oz.
Formula
The formula carries the systems a shampoo is built around, and it sits in the middle of the range for shampoos per ounce.
How the score is counted
- Costs less per ounce than 65% of the 805 shampoos we’ve priced
- Covers 6 of the 7 things a shampoo should do
- Reviewers mention 2 recurring complaints
- Drugstore tier, sold at Grocery / mass
- A working detergent systemWhat actually removes oil and product.3 pts
- Slip for detanglingReduces the force it takes to comb wet hair.2 pts
- A humectantBinds water into the hair.1 pt
- A hard-water chelatorBinds the minerals that dull hair in hard water.1 pt
- A pH adjusterBrings the formula to the acidic pH hair prefers.1 pt
- No detergent-dependent filmNothing that needs a clarifying wash to remove.1 pt
- Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt
The formula score is completeness for the job: the share of the systems this product type is normally built around that we can find in this list, weighted. It is not efficacy, not quality, and it never compares across product types.
Does the same job
Same derived functions — what it cleans, conditions, coats or holds — at a lower cost per ounce. Scent, texture and where you buy it can still differ.
- Scalp active
- Fragrance-free
- Unscented
- Differs
- Scalp active
- Fragrance-free
- Sulfate-free
- Differs
- Scalp active
- Fragrance-free
- Sulfate-free
- Differs
See more alternatives in the product library
These are functional neighbours, not personal recommendations — they are close on formula, not chosen for anyone. Get the one that fits your hair, routine, and budget
Final decision
Should you buy it?
A solid pick for the hair it suitsFlaking scalps who want an over-the-counter scalp active and washing without sulfates
Worth skipping for anyone sensitive to fragrance, dry or damaged hair, or soft, over-stretchy hair that needs protein
Nothing in our library matches it closely at a lower price.
We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.
Reviewers
What people report
Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.
Many users report a cleaner scalp and less itching.
The persistent fragrance is unpleasant or overpowering for some users.
Some users report continued or worse dryness and visible flakes.
More from Neutrogena
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- Hair Restore Advanced Growth Support Serum
- Hair Restore Triple Action Scalp Detox Cleanser
How this page was made
- Everything above is generated from our researched product record — identity, the ingredient list as printed, the brand's own claims, dated price observations, and review themes written in our researchers' own words. No part of this page is written per product.
- 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.
- Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
- 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 consulted for this product (2 manufacturer or regulatory, 1 retailer, 3 editorial), last checked 2026-09-11.
- Ingredient references are linked for 9 of 11 product-aware annotations on this page. Fit notes are conditional formulation guidance, not a conclusion about the finished product or about you.
- We have not tested this product in a lab and we do not physically test your hair. Formula readings come from the ingredient list; behaviour claims are labelled as the brand's.
- Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice.
- Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
- Formula readings: derivation v22. Record last updated 2026-09-11.