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Kevin Murphy

KILLER.CURLS Anti-Frizz Defining Crème

Styler / Curl cream, medium-hold

  • Styler
  • curl cream
  • cream
  • Sulfate-free
  • Protein-free
  • Cruelty-free · PETA-listed
Size6.7 fl oz
Price$46seen at one store · 6.7 oz
Price / oz$6.87/ozat 6.7 oz
Where to buy1 store

Scent:

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

Manufacturer page: kevinmurphy.com.au

Personal fit

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Priced above most curl creams

$6.87/oz at 6.7 oz — more than 95% of the 105 curl creams , which mostly run $1.17–4/oz.

Price and stores

Great for

Protein-sensitive hairthat stiffens when protein is added
Curl definitionfilm formers hold a clump together
Coarse or dry hairthat absorbs everything you give it
Aerosol avoidancea pump or tube, not a pressurised can

Maybe skip if

this product carries a scent
Curly-method routinesthese silicones need a detergent to remove
Oily scalp or fine hairthat gets weighed down
Very dry or damaged hairit contains fast-drying alcohol
Tight budgetsit sits in the upper price tiers

Whether this hold level is right for you depends on your density, porosity, and how long your style has to last — 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.

Hold (as stated) Medium

A medium hold, as stated by the brand.

Hold system Mixed

Gums and synthetic polymers together.

Cast risk Unlikely

Softening ingredients sit alongside the film formers, so a hard shell is unlikely.

Weight on the hair Rich

Heavy butters and waxes in the first eight ingredients.

Oil absorption None

No absorbent powders or starches.

Oils and butters Present, lower down

Oils are present, but low enough to be a finishing touch.

Fast-drying alcohol Present

Fast-drying alcohol is present — it speeds drying and can read dry on the hair.

Needs detergent to remove Yes

Water-insoluble silicones or waxes: a detergent wash is what removes them.

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.

IngredientWhat it doesWhy it mattersChip
Water solvent The base everything else is dissolved in Neutral
Lanolin Wax film former Lays down the film that holds a shape Buildup
Acrylates Copolymer film former Lays down the film that holds a shape Holds
Alcohol Denat. drying alcohol Sets the style fast — the same reason it can read dry Drying
Polyurethane-1 film former Lays down the film that holds a shape Holds
Propylene Glycol Dibenzoate light ester Light slip without much weight Softens
Ethylhexyl Palmitate light ester Light slip without much weight Softens
Cetearyl Alcohol fatty alcohol Thickens and conditions — not a drying alcohol Softens
FragranceFragrance (Parfum) fragrance The scent Fragrance
Citrus Aurantium Bergamia (Bergamot) Peel Oil fragrance The scent Fragrance
Pogostemon Cablin Oil botanical extract A trace plant extract Fragrance
Copernicia Cerifera (Carnauba) Wax wax Adds a little grip Buildup
What the list leaves out, and what it carriesNo sulfates. Protein-free: this is built for moisture rather than for strengthening. Contains fragrance. Contains heavier butters.
Full ingredient list (33)

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 ingredient

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

    • solvent
  • 2 Lanolin Wax
    General function

    The solid fraction of lanolin, used to give balms body and hold.

    Leading ingredient

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

    May suitMaximum-hold styling

    A wax holds by staying solid on the strand, which gives grip and separation rather than a set film that cracks.

    May suitVery dry or highly damaged hair

    Forms a physical barrier on the strand that slows water leaving it. Nothing else in a formula holds moisture in as bluntly.

    May not suitBuild-up-sensitive routines

    It does not disperse in water at all: removing it means a detergent wash, and until then it stays exactly where it landed.

    • film former
    • sealant
    • wax
  • 3 Acrylates Copolymer
    General function

    A hold polymer that forms a firm, humidity-resistant film. It is the usual source of a hard cast in gels.

    Leading ingredient

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

    May suitClimate-sensitive or frizz-prone hair

    A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

    May suitMaximum-hold styling

    Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

    DependsBuild-up-sensitive routines

    Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.

    • film former
    • polymer
  • 4 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.

    Supporting ingredient

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

    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
  • 5 Polyurethane-1
    General function

    A flexible hold polymer. Polyurethanes bend rather than crack, which is what lets a style hold without a stiff feel.

    Supporting ingredient

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

    • film former
    • polymer
  • 6 Propylene Glycol Dibenzoate
    General function

    A light ester used for shine and slip in finishing products.

    Supporting ingredient

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

    May suitFine or easily flattened hair

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    PubChem
    • light ester
    • emollient
  • 7 Ethylhexyl Palmitate
    General function

    A light, dry-feeling ester used for slip without greasiness.

    Supporting ingredient

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

    May suitFine or easily flattened hair

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    PubChem
    • light ester
    • emollient
  • 8 Cetearyl Alcohol
    General function

    A waxy fatty alcohol - nothing like drying alcohol. It gives conditioners their body and leaves a soft, smoothing film on the 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

    The 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 hair

    Deposits with the cationic conditioners and helps them lie flat along the strand, which is where the detangling actually comes from.

    DependsFine or easily flattened hair

    Near the top of a conditioner it is doing most of the conditioning, and most of the weighting, at the same time.

    PubChem
    • fatty alcohol
    • emollient
    • thickener
  • 9 Sodium Polystyrene Sulfonate
    General function

    A film-forming polymer used for hold and to help other ingredients deposit.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitClimate-sensitive or frizz-prone hair

    A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

    May suitMaximum-hold styling

    Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

    DependsBuild-up-sensitive routines

    Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.

    • film former
    • polymer
  • Below about this point, order stops being meaningful — these are typically used at 1% or less.
  • 10 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
  • 11 Ceteareth-20
    • emulsifier
  • 12 AMP-Acrylates Copolymer
    General function

    A neutralised acrylate hold polymer used in sprays for firm, humidity-resistant set.

    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 suitClimate-sensitive or frizz-prone hair

    A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

    May suitMaximum-hold styling

    Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

    DependsBuild-up-sensitive routines

    Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.

    • film former
    • polymer
  • 13 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
  • 14 Microcitrus Australasica Fruit Extract
    • botanical extract
  • 15 Microcitrus Australis Fruit Extract
    • botanical extract
  • 16 Citrus Glauca Fruit Extract
    • botanical extract
  • 17 Pleiogynium Timoriense Fruit Extract
  • 18 Podocarpus Elatus Fruit Extract
    • botanical extract
  • 19 Terminalia Ferdinandiana Fruit Extract
    • botanical extract
    • antioxidant
  • 20 Citrus Aurantium Bergamia (Bergamot) Peel Oil
    General function

    Bergamot oil, used as a bright citrus fragrance note.

    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
    • botanical extract
  • 21 Ilex Paraguariensis Leaf Extract
    • botanical extract
  • 22 Citrullus Lanatus (Watermelon) Fruit Extract
    • botanical extract
  • 23 Aloe Barbadensis Leaf Juice
    General function

    Aloe gel, used for light moisture and slip. High in the list it also contributes a little natural hold.

    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 suitCurls or waves needing flexible hold

    Gums thicken and set soft, which gives definition that bends rather than a rigid cast.

    May suitFine or easily flattened hair

    Hydration with no oil attached, so it adds very little weight even high on a list.

    May suitVery dry or highly damaged hair

    Aloe is mostly water carrying sugars that bind more of it, which is why it turns up as the base of moisture-first formulas.

    • humectant
    • botanical extract
    • gum
  • 24 Adansonia Digitata (Baobab) Seed Oil · Adansonia Digitata Seed Oil
    General function

    Baobab oil, a medium-weight oil used in textured-hair conditioners.

    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

    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.

    • oil
    • emollient
  • 25 Helichrysum Italicum Extract
    • botanical extract
  • 26 Pogostemon Cablin Oil
    General function

    Patchouli essential oil, used as an earthy fragrance note.

    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
  • 27 Copernicia Cerifera (Carnauba) Wax
    General function

    A hard palm wax that gives firm hold and shine.

    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 suitMaximum-hold styling

    A wax holds by staying solid on the strand, which gives grip and separation rather than a set film that cracks.

    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.

    • wax
    • film former
  • 28 PEG-40 Hydrogenated Castor Oil
    • solubilizer
    • emulsifier
  • 29 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
  • 30 Glyceryl Stearate
    General function

    A workhorse emulsifier that holds oil and water together in a cream.

    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
    • emulsifier
    • emollient
  • 31 Caprylic/Capric Triglyceride
    General function

    A light, refined coconut-derived oil that spreads easily and does not go rancid. It gives slip without a heavy feel.

    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

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    • light ester
    • emollient
  • 32 Phenyl Trimethicone
    General function

    A high-refractive silicone used specifically for visible shine in serums and finishing oils.

    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 suitClimate-sensitive or frizz-prone hair

    A 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 hair

    Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.

    • silicone
    • emollient
  • 33 PEG-12 Dimethicone
    General function

    A water-soluble silicone that smooths without the build-up concern of standard silicones.

    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 suitBuild-up-sensitive routines

    The 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 hair

    A 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 hair

    Delivers the slip and surface smoothing of a silicone without needing a detergent wash to remove it afterwards.

    • emollient
    • silicone
    • water-soluble silicone

What the whole list adds up to

  • 11 botanical extracts
  • 8 emollients
  • 6 film formers
  • 4 polymers
  • 3 solvents
  • 3 light esters
  • 3 fragrances
  • 3 emulsifiers
  • 3 humectants
  • 2 waxs
  • 2 silicones
  • 1 sealant
  • 1 drying alcohol
  • 1 fatty alcohol

Ingredient list captured 2026-09-08. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 6.7 oz

Seen at $46 1 store · checked Sep 8
Good value under $43 Under $6.35/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 $43 line; products that do this job typically go for about $58 at this size.

Show the price ladder
Where we’ve seen it1 listing · 1 store

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
  1. 6.7 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.
  2. Seen at $46 is the price we have observed for the 6.7 oz. We need three stores before we call a price commonly seen.
  3. Good value under $43 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $6.35/oz; at 6.7 oz that is $43. Under that line you are paying less than most of them.
  4. About $58 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 6.7 oz.

Formula

Formula score
10 of 10

It costs more per ounce than 95% of the 105 curl creams we’ve priced, and the formula carries the systems the format is built around. Nothing in our library comes close enough on formula to be a cheaper substitute.

How the score is counted
  • 1 products we score as doing the same job cost less per ounce
  • Costs more per ounce than 95% of the 105 curl creams we’ve priced
  • Covers 6 of the 6 things a curl cream should do
  • Reviewers mention 2 things they like about how it performs
  • A hold systemThe polymer, gum, or wax that holds the shape.3 pts
  • Softeners alongside the holdWhat keeps a film flexible instead of brittle.2 pts
  • No drying alcohol in the first threeFast drying without leading on alcohol.2 pts
  • A humectantBinds water into the hair.1 pt
  • A humidity claim with a mechanismThe claim has a film former or silicone behind it.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.

American CrewLowest cost per oz Forming Cream $3.21/oz $3.66/oz less
  • Rich
· Close function
Function
  • Water-binding (humectants)
  • Oils and butters
Also
  • Masstige tier
  • 3 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

Built for wavy to coily hair

Final decision

Should you buy it?

Above-range price, specific fit
Best user

Hair that stiffens on protein who want a protein-free formula and defined, clumped curls

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance, curly-method routines, or oily scalps and fine hair

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.

2
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
0
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
This is one killer anti-frizz curl definer that will put the spring back into sad, straggly curls

Silicones or film formers smooth the cuticle, which is the usual mechanism.

  • Lanolin Wax
  • Acrylates Copolymer
  • Polyurethane-1
Supported

Smoother strands, less frizz.

Delivers the ideal balance of strong hold and elasticity

Synthetic hold polymers are present.

  • Lanolin Wax
  • Acrylates Copolymer
  • Polyurethane-1
Supported

Structure that lasts the day.

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.

Controls frizz while keeping curls soft, defined, and shaped without creating crispness or oiliness.

customers with curly hair seeking frizz control and curl definition

Lightweight formula keeps curls soft and bouncy without weight or crunch, maintaining natural hair movement.

customers seeking lightweight styling that avoids product buildup or stiffness

More from Kevin Murphy

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.
  • 4 sources consulted for this product (1 manufacturer or regulatory, 1 retailer, 2 editorial), last checked 2026-09-08.
  • Ingredient references are linked for 7 of 20 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 2026-09-08.