IGK Hair Density Scalp Treatment — 2.1 oz container

IGK

Hair Density Scalp Treatment

Scalp treatment

Scalp treatment
Moisture-rich

Size2.1 fl oz

Priceabout $45commonly seen · 2.1 oz

Price / oz$21.43/ozat 2.1 oz

Where to buy4 stores · $45.00–45.00

Scent:

The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.

Personal fit

Is this right for you?

Factor Your profile Fit

Best for hair types All types Not in your profile

Moisture level High Not in your profile

Slip / detangling Little Not in your profile

Fragrance Present Not in your profile

Silicone / wax buildup None Not in your profile

Clarifying wash needed Low Not in your profile

Parabens / preservatives Not determined Not in your profile

Essential oils Present Not in your profile

Fast-drying alcohol High Not in your profile

Vegan / cruelty-free Not yet verified Not in your profile

Show all 16 factors we check

The rest of what your plan weighs on this product.

Animal-derived ingredients Not yet verified Not in your profile

Heavy humectants Heavy Not in your profile

UV filter None listed Not in your profile

Ingredient list 30 ingredientsAbout average Not in your profile

Price tier Salon Not in your profile

Where to buy it Brand websiteOne channel Not in your profile

The consultation builds your hair profile, then reads every factor in this table against it — and tells you where this product fits, or what to use instead.

Start your consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

Same job for less elsewhere

$21.43/oz at 2.1 oz — more than 77% of the 152 scalp treatments , which mostly run $3.22–20.64/oz.

View alternatives

Great for

Dry, thirsty hairhumectants and emollients both sit up front

Maybe skip if

this product carries a scent

Very dry or damaged hairit contains fast-drying alcohol

Dry or very humid airwhere heavy humectants work against you

Tight budgetsit sits in the upper price tiers

Picking it up locallywe have it recorded in one channel only

Whether this much richness is right for you depends on your strand thickness, porosity, and how easily your hair flattens — that is what the consultation works out.

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.

Slip and detangling Little

Nothing here is built to reduce combing force.

Oils and butters Present, high in the list

Oils sit high in the list — a softening, coating formula.

Water-binding (humectants) High

Humectants near the top — water-binding is a headline mechanism here.

Needs detergent to remove No

Nothing here needs a detergent wash to remove.

Fragrance Present

Fragrance is listed; it sits below the working ingredients.

from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.

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
WaterWater (Aqua/Eau)	solvent	The base everything else is dissolved in	Neutral
Alcohol Denat.	drying alcohol	Speeds drying — and can read dry on the hair	Drying
Butylene Glycol	humectant	Pulls water into the hair	Moisturizes
Biotin	vitamin	A marketed vitamin addition	Neutral
Acetyl Tetrapeptide-3	—	—	Neutral
Trifolium Pratense (Clover) Flower Extract	botanical extract	A plant extract, marketed as much as functional	Neutral
Cucurbita Pepo (Pumpkin) Seed Oil	oil	Coats and softens the strand	Softens
Polyglutamic Acid	humectant	Pulls water into the hair	Moisturizes
Mentha Piperita (Peppermint) Oil	botanical extract	A trace plant extract	Fragrance
Menthol	fragrance	The scent	Fragrance
FragranceFragrance (Parfum)	fragrance	The scent	Fragrance
Limonene	fragrance	The scent	Fragrance

What the list leaves out, and what it carriesContains fragrance. Fast-drying alcohol is in the list.

Full ingredient list (30)

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 · Water (Aqua/Eau)

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 ingredient
Listed in the first three ingredients, it is likely a structural part of this formula.
- solvent
2 Alcohol Denat.

General function
Fast-drying alcohol used to make sprays set quickly. In leave-on products it can leave hair feeling dry, especially in high position on the list.

Leading ingredient
Listed in the first three ingredients, it is likely a structural part of this formula.

May suitFine or easily flattened hair
Evaporates on contact, which is how a spray sets almost instantly and leaves no weight behind it.

May not suitDry, coarse, or high-porosity hair
Porous hair gives water up easily as it is; a fast-evaporating solvent high on the list accelerates that.

May not suitVery dry or highly damaged hair
It evaporates quickly and takes some water with it. On hair already short of moisture, a formula built on a lot of it can finish drier than it started.

PubChem
- drying alcohol
- solvent
3 Butylene Glycol

General function
A light humectant and carrier that helps extracts dissolve.

Leading ingredient
Listed in the first three ingredients, it is likely a structural part of this formula.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
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.

PubChem
- humectant
- solvent
4 Biotin

General function
Vitamin B7, included for label appeal in thickening and growth-positioned products. Applied to hair it does not reach the follicle.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
PubChem
- vitamin
5 Acetyl Tetrapeptide-3
6 Trifolium Pratense (Clover) Flower Extract

General function
An extract from the flower of Clover (Trifolium Pratense). Plant extracts are used across a wide range of levels, and label order is the best guide to how much is here.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- botanical extract
7 Cucurbita Pepo (Pumpkin) Seed Oil

General function
The oil pressed from Pumpkin (Cucurbita Pepo). How much weight a plant oil leaves depends on the hair it lands on; coarse hair tends to take more of it than fine hair.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

May suitDry, coarse, or high-porosity hair
Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

May suitFrizz-prone, damaged, or high-friction hair
A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

May not suitFine or easily flattened hair
Near the top of a list an oil is weight before it is anything else, and fine hair shows that first at the roots.
- oil
- emollient
8 Polyglutamic Acid

General function
A fermented amino-acid polymer that holds several times its weight in water and leaves a light film.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

May suitMaximum-hold styling
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.

May suitVery dry or highly damaged hair
Humectants bind water into the strand, and water — not oil — is what makes dry hair flexible instead of brittle.

DependsClimate-sensitive or frizz-prone hair
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.
- humectant
- film former
9 Nephelium Lappaceum Seed Extract
10 Phyllanthus Emblica Fruit Extract
- botanical extract
▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
11 Mentha Piperita (Peppermint) Oil

General function
Peppermint essential oil, used for scent and the cooling feeling on the scalp.

Estimated lower-concentration zone
It 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 routines
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.
- botanical extract
- essential oil
- fragrance
12 Glycerin

General function
A small water-loving molecule that draws moisture into the hair and holds it there. It is the most common softening ingredient in conditioners and leave-ins.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitDry, coarse, or high-porosity hair
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

May suitVery dry or highly damaged hair
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

DependsClimate-sensitive or frizz-prone hair
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.

Scientific Reports
- humectant
13 Polysorbate 20
- solubilizer
- emulsifier
14 Phenoxyethanol
- preservative
15 Bisabolol

General function
A chamomile-derived ingredient used for a soothing claim on the scalp.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFrizz-prone, damaged, or high-friction hair
Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.

PubChem
- conditioning agent
- botanical extract
16 Ethylhexylglycerin

General function
A preservative booster that also adds a little softness. Almost always paired with phenoxyethanol.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFrizz-prone, damaged, or high-friction hair
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

PubChem
- preservative
- emollient
17 Tocopheryl Acetate
- antioxidant
- vitamin
18 Maltodextrin

General function
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.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFine or easily flattened hair
Takes up oil at the root, which is where fine hair goes flat first.

May suitMaximum-hold styling
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.

DependsCurls or waves needing flexible hold
How rigid the finish is depends on which polymer it is and what the formula pairs with it, not on there being one.
- absorbent
- film former
- binder
19 Propanediol

General function
A corn-derived humectant and solvent, often chosen as a lighter-feeling alternative to propylene glycol.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
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.

PubChem
- humectant
- solvent
20 Panthenol

General function
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.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFine or easily flattened hair
It hydrates without adding oil or a film, which is the combination fine hair usually needs.

May suitFrizz-prone, damaged, or high-friction hair
Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.

May suitVery dry or highly damaged hair
A humectant that also penetrates the cuticle, so it holds water inside the strand rather than only on the surface.

PubChem
- humectant
- conditioning agent
- vitamin
21 Nitrogen
22 Propylene Glycol

General function
A small humectant and solvent that keeps formulas stable and helps active ingredients spread.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
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.

PubChem
- humectant
- solvent
23 Dextran
24 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 zone
It 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 routines
Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

PubChem
- fragrance
- active
25 Fragrance · Fragrance (Parfum)

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 zone
It 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 routines
Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- declared fragrance
26 Limonene

General function
A citrus-smelling fragrance component that EU rules require to be named separately because some people react to it.

Estimated lower-concentration zone
It 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 routines
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.

PubChem
- fragrance
- named fragrance allergen
27 Hydroxycitronellal

General function
A soft floral fragrance component named separately as a recognised allergen.

Estimated lower-concentration zone
It 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 routines
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.

PubChem
- fragrance
- named fragrance allergen
28 Benzyl Salicylate

General function
A soft floral fragrance component listed separately as a recognised allergen.

Estimated lower-concentration zone
It 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 routines
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.

PubChem
- fragrance
- named fragrance allergen
29 Citral

General function
A lemon-scented fragrance component listed separately as a recognised allergen.

Estimated lower-concentration zone
It 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 routines
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.

PubChem
- fragrance
- named fragrance allergen
30 Citronellol

General function
A rose-like fragrance component named separately as a recognised allergen.

Estimated lower-concentration zone
It 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 routines
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.

PubChem
- fragrance
- named fragrance allergen

What the whole list adds up to

8 fragrances
6 humectants
5 solvents
5 named fragrance allergens
4 botanical extracts
3 vitamins
2 emollients
2 film formers
2 preservatives
2 conditioning agents
1 drying alcohol
1 oil
1 essential oil
1 solubilizer

Drug facts actives

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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 2026-09-13. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 2.1 oz

Commonly seen about $45 Midpoint $45 · 3 stores · checked Sep 14

Good value under $10 Under $4.73/oz it costs less than three-quarters of the 8 products we score as doing the same job

Priced above the products that do the same job. Stores sell it above the $10 line; products that do this job typically go for about $32 at this size.

Show the price ladder

Price for 2.1 ozlower is better

Where we’ve seen it3 listings · 3 stores

Ulta Beauty
$45.00

2.1 oz · $21.43/oz

Sep 14Lowest per oz
Sephora
$45.00

2.1 oz · $21.43/oz

Sep 14
IGK Hair
$45.00

2.1 oz · $21.43/oz

Sep 14

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

2.1 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.
Commonly seen is the middle half of current prices for the 2.1 oz at recognised stores — the cheapest quarter and the dearest quarter are left out, so one sale or one overpriced listing can’t move it.
Good value under $10 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $4.73/oz; at 2.1 oz that is $10. Under that line you are paying less than most of them.
About $32 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 2.1 oz.

Formula

Formula score

4 of 10

It costs more per ounce than 77% of the 152 scalp treatments we’ve priced, the formula leaves out conditioning agents up front, and 4 close matches sell for at least a quarter less per ounce.

How the score is counted

4 products we score as doing the same job cost less per ounce
Costs more per ounce than 77% of the 152 scalp treatments we’ve priced
No conditioning agents up front in the formula
No slip for detangling either

Conditioning agents up frontWhat makes wet hair comb through.3 pts
Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
Slip for detanglingReduces the force it takes to comb wet hair.2 pts
A humectantBinds water into the hair.1 pt
A pH adjusterBrings the formula to the acidic pH hair prefers.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, for less

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.

PATTERN BeautyFragrance-free Scalp Serum $7.25/oz $14.18/oz less

Fragrance-free
Protein-free
Lightweight

· Close function

Function: Film formers
Also: Cruelty-free
Vegan
4 oz bottle

Compare

CHILowest cost per oz Scalp-ology Scalp Scrub $2.38/oz $19.05/oz less

Fragrance-free
Lightweight
Silicone-free

· Close function

Function: Oils and butters
Also: 8 oz bottle

Compare

CHIFragrance-free Scalp-ology Scalp Serum $5.10/oz $16.33/oz less

Fragrance-free
Lightweight
Silicone-free

· Close function

Function: Oils and butters
Also: Masstige tier
3.2 oz bottle

Compare

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?

Hard to justify at this price

Best user

Hair that craves moisture, looking for moisture that stays in

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance, very dry or high-damage hair, or very dry or very humid climates

Best alternative if not

Consider PATTERN Beauty Scalp Serum, 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

What the brand says, against what the formula shows

Claims are quoted from the brand. We only mark one supported, partly supported, or conflicting when the ingredient list actually speaks to it; everything else stays "stated by the brand", which is not a criticism — most claims simply cannot be read off a label.

SupportedBacked by ingredients

Partly supportedSome supporting logic

Stated by brandNo clear evidence

Potential conflictFormula works against claim

Visibly improves hair thickness, fullness and density in 4 weeks (clinically proven)

A brand-run study. We report it as stated and do not repeat the number as fact.

—

Stated by brand

Only the brand’s testing shows this.

Non-greasy, weightless finish that won't disrupt styling

We cannot read weight on the strand from what is recorded.

Water
Alcohol Denat.
Butylene Glycol

Stated by brand

Can’t be confirmed from label.

How to read this

We look at the first 10–15 ingredients and what they do in a formula — not marketing. If the list doesn't speak to a claim, we don't assume.

Reviewers

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.

Multiple reviewers find the mist applicator hard to aim accurately at an 8-10 inch distance and end up spraying it into their hands first to apply it more precisely.

Several reviewers used it specifically to address postpartum shedding, thyroid-related hair loss, or high-stress thinning, and describe renewed growth along the hairline.

A notable minority experience scalp itching, burning, redness, or a rash where the spray lands, with one reviewer describing a recurring allergic reaction.

Many reviewers report visibly thicker, fuller hair and new baby-hair growth along the hairline after consistent use over one to several months.

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.
5 sources consulted for this product (1 manufacturer or regulatory, 0 retailer, 4 editorial), last checked 2026-09-14.
Ingredient references are linked for 14 of 19 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 2026-09-14.

Hair Density Scalp Treatment

Is this right for you?

Read from the label, not the marketing

The ingredients that change a decision

What the whole list adds up to

Drug facts actives

Should you buy it?

What the brand says, against what the formula shows

What people report

More from IGK

How this page was made

Your personalized hair plan