85% of consumers noticed a thickening effect
A brand-run study. We report it as stated and do not repeat the number as fact.
—
Only the brand’s testing shows this.
Sizes & containers
10.14 fl oz (300 ml) · Usually $19–$28
Shampoo / Clarifying, deep-cleaning
Add it to your products. We’ll tell you if it’s ever recalled.
Scent:
Reviewers describe it as eucalyptus, menthol, mint.
Strength: Strong
Manufacturer page: nioxin.com
Personal fit
Complete the consultation to see how well this product fits your hair and your goals. With 6,000+ products in our library, we can match you to the right ones.
$49 with 60 days of follow-up questions and plan updates
$99 with 12 months. Pay once; the year renews only if you choose.
The rest of what your plan weighs on this product.
The consultation builds your hair profile, checks every factor in this table against it, and tells you where this product fits or what to use instead.
Start your consultation$49 once, with 60 days of follow-up questions and plan updates. Nothing renews, and you never have to buy a product.
Your avoid-list
Upper-mid price for a shampoo
$2.33/oz at 10.14 oz, more than 65% of the 1544 shampoos , which mostly run $0.79–3.04/oz. The cost less.
Great for
Maybe skip if
What the formula actually does
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.
A reset wash that removes oil, buildup, and most residue.
Thick foam that spreads quickly through the hair.
Nothing here is built to reduce combing force.
Humectants appear, but low enough to be a minor part.
No over-the-counter scalp active.
Contains chelators, which bind hard-water and pool minerals.
Nothing here needs a detergent wash to remove.
Protein appears, low enough to be a supporting ingredient.
Fragrance is listed; it sits below the working ingredients.
Ingredients that matter
The workhorse ingredients, plus anything lower down that changes a decision. The 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 |
|---|---|---|---|
| WaterAqua/Water/Eau | solvent | The base everything else is dissolved in | Neutral |
| Sodium Laureth Sulfate | sulfate cleanser | — | Cleanses |
| Sodium Lauryl Sulfate | sulfate cleanser | — | Cleanses |
| Cocamidopropyl Betaine | amphoteric cleanser | — | Cleanses |
| Cocamide MEA | secondary cleanser | Softens the main detergent | Cleanses |
| Sodium Benzoate | preservative | Keeps the product from spoiling | Stabilizes |
| Citric Acid | pH adjuster | Fine-tunes the pH | pH balancer |
| Sodium Chloride | salt | Adjusts the texture | Stabilizes |
| Salicylic Acid | active | A secondary active | Active |
| Mentha Arvensis Leaf Oil | fragrance | The scent | Fragrance |
| Mentha Piperita (Peppermint) Oil | botanical extract | A trace plant extract | Fragrance |
| Limonene | fragrance | The scent | Fragrance |
In the US, ingredients above 1% are listed from most to least. Below 1% they can appear in any order. Each note keeps three things apart: what the ingredient generally does, its role in this type of product, and what its position can tell you.
The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.
Listed in the first three ingredients, it is likely a structural part of this formula.
A strong, high-foaming cleanser and the most common shampoo detergent. It removes oil and product efficiently, which can be more than dry or colour-treated hair wants.
Listed in the first three ingredients, it is likely a structural part of this formula.
A sulfate detergent can lift deposited silicone, wax and styling films, which is what resets a routine before build-up is visible.
Fine hair that goes limp under conditioning films usually reads a full detergent wash as volume returning.
Coarse and high-porosity hair loses water quickly on its own; an efficient detergent removes the surface oils that were slowing that down.
A high-foaming, strongly cleansing detergent. It clears build-up thoroughly and is the harsher of the two common sulfates.
Listed in the first three ingredients, it is likely a structural part of this formula.
A sulfate detergent can lift deposited silicone, wax and styling films, which is what resets a routine before build-up is visible.
Fine hair that goes limp under conditioning films usually reads a full detergent wash as volume returning.
Coarse and high-porosity hair loses water quickly on its own; an efficient detergent removes the surface oils that were slowing that down.
A mild coconut-derived co-cleanser that boosts foam and softens the effect of stronger detergents. It appears in most shampoos, gentle or not.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
Mild cleansing leaves more surface lubrication in place on hair that dries out quickly.
The mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.
Among 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.
A coconut-derived thickener that stabilises foam and gives shampoo its body.
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
Mild cleansing leaves more surface lubrication in place on hair that dries out quickly.
A sugar-derived non-ionic detergent, among the gentlest in use. It cleanses with little foam of its own and little sebum removal.
Gentle cleansing leaves water-insoluble deposits largely in place; they come off with a stronger wash, not this one.
A food-grade preservative that works only in acidic formulas, which is why it usually appears alongside citric acid.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
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.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Holds hard-water minerals in solution so they rinse away instead of depositing on the hair.
The 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.
Where a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.
Table salt. In shampoo it is used to thicken the liquid, not to treat the hair.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Cornmint oil, used for a cooling sensation and mint scent.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
Peppermint essential oil, used for scent and the cooling feeling on the scalp.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Essential oils are fragrance. Several carry constituents on the EU list of declared fragrance allergens, so a label with no fragrance line can still be a scented product.
Binds the metal ions in hard water so they cannot dull hair or destabilise the formula.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Binds the calcium and magnesium in hard water, which is what stops mineral deposits accumulating on the strand wash after wash.
Copper 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.
A small humectant and solvent that keeps formulas stable and helps active ingredients spread.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Light and water-binding rather than oily, so it adds less weight than oils or butters do.
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.
A 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.
Glycerin, also called glycerol, attracts moisture and mixes completely with water.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.
Water moves both ways. Measured across concentrations, glycerin solutions give water up in some conditions and take it from the air in others. What it does for you depends on how much of it is there and on the air around it.
A strong base used in trace amounts to raise pH; fully neutralised in the finished product.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
The 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.
A citrus-smelling fragrance component that EU rules require to be named separately because some people react to it.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
A cystine derivative modified to bind more firmly to the strand, used in strengthening formulas.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
Vitamin B3, used in scalp products for conditioning claims.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.
Provitamin B5. It draws in water and penetrates the strand a little, which is why it is the standard ingredient for softness and shine claims.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
It hydrates without adding oil or a film, which is the combination fine hair usually needs.
Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.
A humectant that also penetrates the cuticle, so it holds water inside the strand rather than only on the surface.
A soy- or sunflower-derived lipid that helps conditioning ingredients spread evenly on the strand.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
A certified colour used to tint the product itself, not the hair.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.
A starch fragment that soaks up oil and water, which is what puts it in dry shampoos. It also carries spray-dried plant extracts and leaves a light film.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Takes up oil at the root, which is where fine hair goes flat first.
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
How rigid the finish is depends on which polymer it is and what the formula pairs with it, not on there being one.
Used with citric acid to hold the formula at a steady, slightly acidic pH. It also binds a little hard-water mineral.
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Binds the calcium and magnesium in hard water, which is what stops mineral deposits accumulating on the strand wash after wash.
Copper 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.
pH 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.
Ingredient list captured 2026-08-22. Formulas change, so check the package in your hand when an ingredient matters to you.
Price · 10.14 oz
Priced above the products that do the same job. Stores sell it above the $7 line; products that do this job typically go for about $12 at this size.
Sizes
The 33.8 oz costs 33% less per ounce than the 10.14 oz.
10.14 ozusual store size
16.9 oz
33.8 ozBest per ounce
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.
Formula
The formula carries the systems a shampoo is built around, and it sits in the middle of the range for shampoos per ounce.
The formula score measures completeness for the job: a weighted share of the systems this product type is usually built around that we find in this list. It does not rate how well the product works or its quality, and it never compares across product types.
Does the same job, for less
Formulas that do the same things (cleanse, condition, coat or hold) for less per ounce. Scent, texture and where you buy them can still differ.
See more alternatives in the product library
These products do a similar job. We haven’t matched them to you. Find the one that fits your hair, routine and budget



Final decision
Scalps that oil up within a day, looking for a proper reset wash and a hard-water chelator
Worth skipping for anyone sensitive to fragrance, sulfate-free routines and fresh keratin treatments, or dry or damaged hair
Consider Everyone EO Essentials Sweet Orange Shampoo, for similar results 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.
Claims check
Claims are quoted from the brand. We mark a claim supported, partly supported or conflicting only when the ingredient list speaks to it. Everything else stays "stated by the brand". That isn’t a criticism: most claims can’t be checked from a label.
85% of consumers noticed a thickening effect
A brand-run study. We report it as stated and do not repeat the number as fact.
—
Only the brand’s testing shows this.
80% noticed an increase in hair density
A brand-run study. We report it as stated and do not repeat the number as fact.
—
Only the brand’s testing shows this.
80% noticed an increase in hair fullness (230-person, 2016 survey)
A brand-run study. We report it as stated and do not repeat the number as fact.
—
Only the brand’s testing shows this.
We look at the first 10–15 ingredients and what they do in a formula, not at the marketing. If the list doesn't speak to a claim, we don't assume.
Reviewers
Themes that come up again and again in sourced reviews, written by our researchers in their own words. We don’t store or scrape star ratings.
Perceived to balance oily scalp/hair and leave hair feeling clean with added volume
oily-scalp usersReviewers, many identifying as stylists, report visible hair thickening/growth and reorder for salon clients
stylist/salon users, repeat buyersSome reviewers with scalp eczema or sensitivity report it calms irritation without over-drying, and less menthol-forward than other Nioxin-type products
sensitive/eczema-prone scalp usersA minority report drying effects or increased shedding, especially those with fine hair
fine-hair usersStrong minty/eucalyptus-menthol scent noted, described as refreshing by most but off-putting to some
general users