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Side by side

Aussie Instant Volume Mousse vs Aussie Mega Hair Spray

81% function match · 10 of the 13 functions we compared match Formula overlap 1%. Aussie Instant Volume Mousse and Aussie Mega Hair Spray share 1 ingredient among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • Instant Volume Mousse — protein-sensitive hair
  • Mega Hair Spray — protein-sensitive hair

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
Aussie Instant Volume Mousse — 6 oz container Aussie

Instant Volume Mousse

  • Styler
  • Value
  • Sulfate-free
  • Silicone-free
Aussie Mega Hair Spray — 10 oz container Aussie

Mega Hair Spray

  • Styler
  • Value
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
about $5 6 oz · $0.83/oz
about $5 10 oz · $0.50/oz
Value / price positioning
Lower cost than most volumizers $$$$$ Value tier · costs less than 100% of the 64 volumizers we’ve priced
Lower cost than most hairsprays $$$$$ Value tier · costs less than 100% of the 96 hairsprays we’ve priced
Best for hair types
Straight–Wavy A light volumising formula — the lift it adds matters most on straighter hair. Your hair
Straight–Wavy A light volumising formula — the lift it adds matters most on straighter hair. Your hair
Moisture level Differs
Moderate Humectants in the working part of the formula. Your hair
Low Humectants appear, but low enough to be a minor part. Your hair
Hold (as stated)
Strong A strong hold, as stated by the brand. Your hair
—
Slip / detangling Differs
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Moderate Conditioning agents are present, lower in the list. Your hair
Weight on hair Same
Light Water-first and light: unlikely to flatten fine hair. Your hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
Fragrance
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Protein Same
None No protein or amino acids in the list. Your hair
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Same
None Nothing here needs a detergent wash to remove. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
Low Your hair
Low Your hair
Hold system Same
Synthetic polymer Synthetic hold polymers — the firmest of the hold systems. Your hair
High Synthetic hold polymers — the firmest of the hold systems. Your hair
Cast risk Same
Likely Film formers without much softening them — expect a cast to scrunch out. Your hair
Likely Film formers without much softening them — expect a cast to scrunch out. Your hair
Oil absorption Same
None No absorbent powders or starches. Your hair
None No absorbent powders or starches. Your hair
Oils and butters Same
None No oils or butters in the list. Your hair
None No oils or butters in the list. Your hair
Fast-drying alcohol Same
None No fast-drying alcohol in the list. Your hair
None No fast-drying alcohol in the list. Your hair
Formula completeness
out of 10
Covers the core
out of 10
Covers the core
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Curl definitionfilm formers hold a clump together
  • Protein-sensitive hairthat stiffens when protein is added
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Curl definitionfilm formers hold a clump together
  • Fine hairthat flattens under most products
Why you might skip it
  • Scents bother youthis product carries a scent
  • Anyone who dislikes a castthe film formers here can set firm
  • Soft, touchable finishesthe brand states a firm hold
  • Scents bother youthis product carries a scent
  • Anyone who dislikes a castthe film formers here can set firm
  • Aerosol avoidancethis is a pressurised can
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Styleraerosol
Stylerspray
Where to buy
Brand website · Target
Grocery / mass
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · label states
Scent
Scented, not described
Scented, not described
Hold
strongThe manufacturer says the mousse creates bounce with a hold that stays strong for 24 hours.
—
How often
as needed
—

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

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

The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientInstant Volume MousseMega Hair Spray
Water
Neutral
#1Leading
#1Leading
Fragrance
Fragrance
#5Below the 1% line
#4Below the 1% line
Phenoxyethanol
Stabilizes
#6Below the 1% line
#10Below the 1% line

What only one of them carries

Instant Volume Mousse

Mega Hair Spray

Full ingredient list — Instant Volume Mousse (12)
Full ingredient list — Mega Hair Spray (18)

Claims check

What each brand says, against what each formula shows

Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.

VerdictsInstant Volume MousseMega Hair Spray
Supported
3
2
Partly supported
0
0
Stated by brand
0
0
Potential conflict
0
1

Instant Volume Mousse

  • instant volumeSupportedLeaves room for lift.
  • weightless body and bounceSupportedLeaves room for lift.
  • strong hold for 24 hoursSupportedStructure that lasts the day.

Mega Hair Spray

  • Flexible, light holdSupportedStructure that lasts the day.
  • Won't weigh you downSupportedLess likely to weigh hair down.
  • Doesn't make your hair crunchyPotential conflictExpect a cast you have to scrunch out.

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Both praised for the scent and a clean rinse-out. Aussie Instant Volume Mousse draws complaints about how it cleanses and the packaging; Aussie Mega Hair Spray draws complaints about hold.

Instant Volume Mousse

A verified purchaser says the mousse adds volume and extra curl dimension without weighing hair down or making it crunchy.

Target verified purchaser

A verified purchaser reports a pleasant scent and noticeable volume.

Target verified purchaser

Another customer says the dispensed foam pops into a sticky mess despite shaking the can and no longer delivers the prior product's result.

customer review originally posted on aussie.com

A reviewer says the foam collapsed immediately during application, leaving patchy crunchy strands and making even application difficult.

August 2026 customer review

A reviewer says the scent is refreshing but the hold did not last long on their not-very-thick hair.

reviewer with hair they describe as not very thick

Mega Hair Spray

Older/curated reviews (predating the reformulation complaints) describe a pleasant, light scent and a hold that doesn't feel crunchy or stiff

curated 'what others are saying' reviewers

New formula leaves a white, flaky residue, especially noticeable on dark hair

a long-time user with dark hair

A formula change is widely reported to have ruined the product -- reviewers who used it for years say the new version is sticky, stiff, and no longer 'flexible'

long-time repeat buyers (some citing 10-15+ years of use)

Reformulation also changed the hold: reviewers say the spray now feels wet and provides little to no lasting hold

decades-long repeat buyers

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$0.50/oz vs $0.83/oz — Aussie Instant Volume Mousse costs about 1.7× more per ounce than Aussie Mega Hair Spray.

Instant Volume Mousse

Against 64 volumizers with a computable unit price.

Mega Hair Spray

Against 96 hairsprays with a computable unit price.

Value readInstant Volume MousseMega Hair Spray
Label
Lower cost than most volumizersCosts less per ounce than most volumizers we have researched.
Lower cost than most hairspraysCosts less per ounce than most hairsprays we have researched.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

Instant Volume Mousse vs Instant Freeze Sculpting MousseAussie · 100% function matchMega Hair Spray vs Volume SprayVerb · 93% function matchInstant Volume Mousse vs Curl Boosting Mousse for Frizzy HairHerbal Essences · 100% function matchMega Hair Spray vs Total Volume Plumping MousseTRESemme · 91% function matchInstant Volume Mousse vs Volumizing + Thickening MousseNioxin · 100% function matchMega Hair Spray vs TRESemmé Extra Hold MousseTRESemmé · 91% function matchInstant Volume Mousse vs EIMI Extra Volume Mousse Strong Hold Volumizing MousseWella · 100% function matchMega Hair Spray vs Queen For A Day Thickening Spray For Fine HairBed Head · 91% function match

Instant Volume Mousse · Mega Hair Spray · All volumizers in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • 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.
  • The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
  • 6 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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