Glass-Hair Smooth, No Frizz
Silicones or film formers smooth the cuticle, which is the usual mechanism.
- Butyl Ester Of PVM/MA Copolymer
- PEG/PPG-17/18 Dimethicone
- Hydrolyzed Corn Protein
Supported
Smoother strands, less frizz.
IGK
Good Behavior Smoothing Spray
Heat protectant / Lotion, heat-protecting
- Heat protectant
- spray
- Also a leave-in
- Sulfate-free
Size5 fl oz
Price$37.05seen at one store · 5 oz
Price / oz$7.41/ozat 5 oz
Where to buy2 stores · $37.05–38.00
Scent:
Notes: fresh, musk.
Strength: Strong
Manufacturer page: igkhair.com
Personal fit
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Factor
Your profile
Fit
Best for hair types
Straight–Curly
Not in your profile
Moisture level
Low
Not in your profile
Heat protection
High
Not in your profile
Slip / detangling
Moderate
Not in your profile
Weight on hair
Medium
Not in your profile
Fragrance
Present
Not in your profile
Protein
Prominent
Not in your profile
Silicone / wax buildup
High
Not in your profile
Clarifying wash needed
Moderate
Not in your profile
Scent
Amber & spice · Fresh & airyStrong strength
Not in your profile
Show all 21 factors we check
The rest of what your plan weighs on this product.
Parabens / preservatives
None of these listed
Not in your profile
Essential oils
None listed
Not in your profile
Fast-drying alcohol
High
Not in your profile
Vegan / cruelty-free
Not yet verified
Not in your profile
Animal-derived ingredients
Not yet verified
Not in your profile
Heavy humectants
Not heavy
Not in your profile
Hard-water defence
None
Not in your profile
UV filter
Present
Not in your profile
Ingredient list
23 ingredientsAbout average
Not in your profile
Price tier
Prestige
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.
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Your avoid-list
Priced above most heat protectants
$7.41/oz at 5 oz — more than 86% of the 553 heat protectants , which mostly run $1.25–5.80/oz.
Great for
Heat stylingthe brand states protection to 450°F
Protein-hungry hairthat stretches and stays stretched when wet
Sun and colour fadea UV filter is in the list
A wide range of haira middle-of-the-range weight
Maybe skip if
this product carries a strong scent
Curly-method routinesthese silicones need a detergent to remove
Protein-sensitive hairthat goes stiff or straw-like on protein
Very dry or damaged hairit contains fast-drying alcohol
Aerosol avoidancethis is a pressurised can
Tight budgetsit sits in the upper price tiers
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.
Heat protection
Stated to 450°F
The brand states a protection temperature — a label claim, not a measurement.
Weight on the hair
Medium
Middle of the range — noticeable on fine hair, light on coarse hair.
Slip and detangling
Moderate
Conditioning agents are present, lower in the list.
Needs detergent to remove
Yes
Water-insoluble silicones or waxes: a detergent wash is what removes them.
Water-binding (humectants)
Low
Humectants appear, but low enough to be a minor part.
Fast-drying alcohol
High in the list
Fast-drying alcohol in the first three ingredients.
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 |
|---|---|---|---|
| Alcohol Denat. | drying alcohol | Speeds drying — and can read dry on the hair | Drying |
| Hydrofluorocarbon 152a | propellant | Pushes the product out of the can | Neutral |
| Butyl Ester Of PVM/MA Copolymer | film former | Lays down the film that holds a shape | Holds |
| PEG/PPG-17/18 Dimethicone | emulsifier | Keeps oil and water mixed | Buildup |
| WaterAqua/Water/Eau | solvent | The base everything else is dissolved in | Neutral |
| Vanillin | fragrance | The scent | Fragrance |
| C12-15 Alkyl Benzoate | light ester | A light, silky feel | Softens |
| Aminomethyl Propanol | pH adjuster | Fine-tunes the pH | pH balancer |
| Hydrolyzed Corn Protein | film former | A supporting film former | Protein |
| Hydrolyzed Soy Protein | film former | A supporting film former | Protein |
| Hydrolyzed Wheat Protein | film former | A supporting film former | Protein |
| Silicone Quaternium-16 | silicone | A little heat-spreading smoothing | Buildup |
What the list leaves out, and what it carriesThe list carries no sulfates. Protein sits high: this is a strengthening step rather than a moisture one. Fragrance is on the label. Water-insoluble silicones — needs a detergent wash to remove.
Full ingredient list (23)
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
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 ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitFine or easily flattened hairEvaporates on contact, which is how a spray sets almost instantly and leaves no weight behind it.
May not suitDry, coarse, or high-porosity hairPorous 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 hairIt 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.
- drying alcohol
- solvent
-
2
Hydrofluorocarbon 152a
General function
A non-flammable aerosol propellant used in dry shampoos and finishing sprays.
Leading ingredientPubChemListed in the first three ingredients, it is likely a structural part of this formula.
- propellant
-
3
Butyl Ester Of PVM/MA Copolymer
General function
A hold polymer that sets firmly and resists humidity, common in hairsprays.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
May suitMaximum-hold stylingResins set into the hardest film a hair formula offers, which is the firmest hold available and the least forgiving of restyling.
May not suitCurls or waves needing flexible holdA hard-setting resin is what makes a cast crack rather than bend, which is the opposite of a curl that still moves.
- film former
- polymer
- resin
-
4
PEG/PPG-17/18 Dimethicone
General function
A water-soluble silicone that smooths and helps other silicones spread, without the build-up concern.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitBuild-up-sensitive routinesThe PEG- and PPG-modified silicones disperse in water, so ordinary washing carries them off instead of leaving a film to accumulate.
May suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairDelivers the slip and surface smoothing of a silicone without needing a detergent wash to remove it afterwards.
- emulsifier
- silicone
- water-soluble silicone
-
5
Water
· Aqua/Water/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.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- solvent
- ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
6
Vanillin
General function
The main scent compound in vanilla, used as a fragrance note.
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
-
7
C12-15 Alkyl Benzoate
General function
A dry-feeling ester used for a silky, non-greasy finish - a common silicone substitute.
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 suitFine or easily flattened hairA light emollient: it softens the surface with noticeably less weight than an oil or a butter.
May suitFrizz-prone, damaged, or high-friction hairSpreads thin and lowers friction between strands without the heaviness of a fixed oil.
- light ester
- emollient
-
8
Aminomethyl Propanol
General function
A base used in trace amounts to neutralise acidic hold polymers so they thicken and set properly.
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.
PubChemDependsFrizz-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
-
9
Hydrolyzed Corn Protein
General function
A plant protein used in strengthening blends, often with wheat and soy.
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 suitFrizz-prone, damaged, or high-friction hairFilling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.
May suitMaximum-hold stylingFilm 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 hairHydrolysed fragments are small enough to sit in the gaps of a worn cuticle for a wash or two, temporarily restoring stiffness and cutting breakage in combing.
- film former
- protein
- hydrolysed protein
-
10
Hydrolyzed Soy Protein
General function
A plant protein used for body and moisture retention.
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 suitFrizz-prone, damaged, or high-friction hairFilling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.
May suitMaximum-hold stylingFilm 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 hairHydrolysed fragments are small enough to sit in the gaps of a worn cuticle for a wash or two, temporarily restoring stiffness and cutting breakage in combing.
- film former
- protein
- hydrolysed protein
-
11
Hydrolyzed Wheat Protein
General function
Wheat protein broken into fragments small enough to cling to the hair. It adds temporary strength and body; too much can feel stiff.
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 suitFrizz-prone, damaged, or high-friction hairFilling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.
May suitMaximum-hold stylingFilm 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 hairHydrolysed fragments are small enough to sit in the gaps of a worn cuticle for a wash or two, temporarily restoring stiffness and cutting breakage in combing.
- film former
- protein
- hydrolysed protein
-
12
Silicone Quaternium-16
General function
A conditioning silicone that binds where hair is damaged, for smoothing and heat protection.
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 suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairAmino-functional silicone carries a positive charge, so it binds where the cuticle is worn rather than coating evenly. Damaged areas get most of it.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- silicone
- conditioning agent
- film former
-
13
Undeceth-11
- emulsifier
- solubilizer
-
14
Peg/Ppg-18/18 Dimethicone
General function
An ethoxylated or propoxylated formulation aid. Ingredients of this family keep oils, silicones and fragrance evenly dispersed in a water-based 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.
May suitBuild-up-sensitive routinesThe PEG- and PPG-modified silicones disperse in water, so ordinary washing carries them off instead of leaving a film to accumulate.
May suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairDelivers the slip and surface smoothing of a silicone without needing a detergent wash to remove it afterwards.
- emulsifier
- silicone
- water-soluble silicone
-
15
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 zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Scientific ReportsMay suitDry, coarse, or high-porosity hairHigh-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 hairBinds 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 hairWater 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.
- humectant
-
16
Cinnamidopropyltrimonium Chloride
General function
A conditioning agent that binds to hair and is also used to help shield it from sun exposure.
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 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 suitGray, silver, or brass-prone hairSunlight oxidises hair pigment, and on gray, silver or lightened hair that shows up as yellowing. A UV filter on the label absorbs some of the light that drives it.
May suitVery dry or highly damaged hairThe class that does the detangling in a conditioner. It deposits lubrication where the cuticle is worn.
- conditioning agent
- UV filter
-
17
Butyloctanol
General function
A liquid fatty alcohol used for slip and to keep a formula fluid.
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 suitDry, coarse, or high-porosity hairThe waxy solid that gives a conditioner its body. It deposits a soft lubricating layer, which is most of what makes hair feel smooth after rinsing.
May suitFrizz-prone, damaged, or high-friction hairDeposits with the cationic conditioners and helps them lie flat along the strand, which is where the detangling actually comes from.
- fatty alcohol
- emollient
-
18
Undeceth-5
- emulsifier
- solubilizer
-
19
Butylene Glycol
General function
A light humectant and carrier that helps extracts dissolve.
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.
- humectant
- solvent
-
20
Spirulina Maxima Extract
- botanical extract
-
21
Arctium Lappa Root Extract
- botanical extract
-
22
Fragrance
· Parfum/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
-
23
Alpha-Isomethyl Ionone
General function
A violet-like fragrance component named separately as a recognised allergen.
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 routinesOne 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.
- fragrance
- named fragrance allergen
What the whole list adds up to
- 5 film formers
- 4 emulsifiers
- 3 solvents
- 3 silicones
- 3 fragrances
- 3 proteins
- 3 hydrolysed proteins
- 2 water-soluble silicones
- 2 emollients
- 2 conditioning agents
- 2 solubilizers
- 2 humectants
- 2 botanical extracts
- 1 drying alcohol
Ingredient list captured 2026-08-23. Formulas change — check the package in your hand when an ingredient matters to you.
Price · 5 oz
Seen at
$37.05
Show the price ladder
Where we’ve seen it2 listings · 2 stores
5 ozmost listedBest per ounce
-
The Warehouse Salon
$37.055 oz · $7.41/ozAug 30Lowest per oz
-
Brand website
$38.00Aug 23
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
- 5 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 $37.05 is the price we have observed for the 5 oz. We need three stores before we call a price commonly seen.
- About $12 is what heat protectants typically cost at this size. Too few of the products that do the same job carry a price for us to draw a good-value line.
Formula
9
Formula score
9 of 10
Above the range for heat protectants per ounce for a complete formula, with no close, lower-priced match in our library.
How the score is counted
- Nothing in our library does the same job for less
- Costs more per ounce than 86% of the 553 heat protectants we’ve priced
- Covers 5 of the 6 things a heat protectant should do
- Reviewers mention 2 recurring complaints
- A film-forming heat spreaderSilicones or polymers that spread heat along the strand.3 pts
- A stated heat claimThe brand names the protection it claims.2 pts
- A light baseWater or a volatile carrier first, so it does not weigh hair down.2 pts
- A humectantBinds water into the hair.1 pt
- Slip for detanglingReduces the force it takes to comb wet hair.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.
Bumble and bumbleClosest function
Don't Blow It Fine Air-Dry Hair Cream
$7.40/oz $0.01/oz less
- Vegan & CF
- Function
- Also
Paul MitchellLowest cost per oz
Neuro Protect HeatCTRL Iron Hairspray
$4.75/oz $2.66/oz less
- Heat protect
- Protein
- Lightweight
- Function
- Also
KerastaseClose function
Blond Absolu Cicaplasme Thermique Heat Protecting Cream
$9.86/oz $2.45/oz more
- Heat protect
- Medium weight
- Function
- Also
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?
Only if you need exactly thisBest user
People who blow-dry or flat-iron who want heat protection and protein high in the formula
Biggest tradeoff
Not ideal for anyone sensitive to fragrance, curly-method routines, or hair that stiffens on protein
Best alternative if not
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.
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.
3
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
1
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Keratin-like treatment smooths and adds shine
Silicones or film formers smooth the cuticle, which is the usual mechanism.
- Butyl Ester Of PVM/MA Copolymer
- PEG/PPG-17/18 Dimethicone
- Hydrolyzed Corn Protein
Supported
Smoother strands, less frizz.
Heat activated styler provides a glass like finish
This is a marketing claim; an ingredient list cannot speak to it.
—
Stated by brand
Can’t be confirmed from label.
4-day frizz control
Silicones or film formers smooth the cuticle, which is the usual mechanism.
- Butyl Ester Of PVM/MA Copolymer
- PEG/PPG-17/18 Dimethicone
- Hydrolyzed Corn Protein
Supported
Smoother strands, less frizz.
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.
Easier than sectioned spraying, praised for smoothness/silkiness and eliminating frizz
One complaint about scent being too musky/strong
A minority report no effect, or dry/frizzy ends
More from IGK
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.
- 3 sources consulted for this product (3 manufacturer or regulatory, 0 retailer, 0 editorial), last checked 2026-08-25.
- Ingredient references are linked for 7 of 17 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 2026-08-25.