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Side by side

Aussie Instant Volume Mousse vs Living Proof Perfect hair Day Heat Styling Spray

80% function match · 6 of the 9 functions we compared match Formula overlap 0%. Aussie Instant Volume Mousse and Living Proof Perfect hair Day Heat Styling Spray share no ingredient among each other's most prominent — which does not stop them doing the same job.

These sit in different steps of a routine — Aussie Instant Volume Mousse is a styler and Living Proof Perfect hair Day Heat Styling Spray is a heat protectant. Comparing their formulas is fair; treating one as a replacement for the other is not.

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
  • Perfect hair Day Heat Styling Spray — heat styling

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
Living Proof Perfect hair Day Heat Styling Spray — 5.5 oz container Living Proof

Perfect hair Day Heat Styling Spray

  • Heat protectant
  • Prestige
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
about $5 6 oz · $0.83/oz
about $34 5.5 oz · $6.18/oz
Value / price positioning
Lower cost than most volumizers $$$$$ Value tier · costs less than 100% of the 64 volumizers we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 76% of the 1029 heat protectants 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–Curly Smoothing and thermal products span straight through curly 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 Same
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Weight on hair Differs
Light Water-first and light: unlikely to flatten fine hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Present Fragrance is listed; it sits below the working ingredients. 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
Heat protection
—
High The brand states a protection temperature — a label claim, not a measurement. Your hair
Hold system
Synthetic polymer Synthetic hold polymers — the firmest of the hold systems. Your hair
—
Cast risk
Likely Film formers without much softening them — expect a cast to scrunch out. Your hair
—
Oil absorption
None No absorbent powders or starches. Your hair
—
Oils and butters Same
None No oils or butters in the list. Your hair
—
Fast-drying alcohol Differs
None No fast-drying alcohol in the list. Your hair
High in the list Fast-drying alcohol in the first three ingredients. Your hair
Formula completeness
out of 10
Covers the core
out of 10
Complete for its job
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
  • Heat stylingthe brand states protection to 450°F
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Silicone-free routinesno silicones appear in the list
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
  • Very dry or damaged hairit contains fast-drying alcohol
  • 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
Heat protectantspray
Where to buy
Brand website · Target
Brand website
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 · PETA-listed
Scent
Scented, not described
Fresh & airy
Hold
strongThe manufacturer says the mousse creates bounce with a hold that stays strong for 24 hours.
—
Heat protection
—
up to 450°F
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 MoussePerfect hair Day Heat Styling Spray
Water
Neutral
#1Leading
#3Leading
Fragrance
Fragrance
#5Below the 1% line
#16Below the 1% line

What only one of them carries

Instant Volume Mousse

Perfect hair Day Heat Styling Spray

Full ingredient list — Instant Volume Mousse (12)
Full ingredient list — Perfect hair Day Heat Styling Spray (40)

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 MoussePerfect hair Day Heat Styling Spray
Supported
3
1
Partly supported
0
2
Stated by brand
0
2
Potential conflict
0
0

Instant Volume Mousse

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

Perfect hair Day Heat Styling Spray

  • Smoothness for up to 48 hoursStated by brandCan’t be confirmed from label.
  • Heat protection up to 450F/230CPartly supportedSold for hot tools; untestable here.
  • Lightweight, silicone-free formulaSupportedNothing that needs a strong wash.
  • Ultra-fine mistStated by brandCan’t be confirmed from label.
  • Works on damp or dry hairPartly supportedSome hydration, at a low level.

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.

Aussie Instant Volume Mousse draws complaints about residue or cast and how it cleanses.

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

Perfect hair Day Heat Styling Spray

Excellent, best-in-class heat/thermal protection

Leaves hair soft, smooth, silky and lightweight without weighing it down or leaving it tangled

Does not provide lasting hold/curl retention; scent praised as pleasant

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.

$0.83/oz vs $6.18/oz — Living Proof Perfect hair Day Heat Styling Spray costs about 7.4× more per ounce than Aussie Instant Volume Mousse.

Instant Volume Mousse

Against 64 volumizers with a computable unit price.

Perfect hair Day Heat Styling Spray

Against 1029 heat protectants with a computable unit price.

Value readInstant Volume MoussePerfect hair Day Heat Styling Spray
Label
Lower cost than most volumizersCosts less per ounce than most volumizers we have researched.
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.

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 matchPerfect hair Day Heat Styling Spray vs Clear Styling GlazePaul Mitchell · 90% function matchInstant Volume Mousse vs Curl Boosting Mousse for Frizzy HairHerbal Essences · 100% function matchPerfect hair Day Heat Styling Spray vs Style Flex 2-In-1 Adjustable HairsprayMarc Anthony · 85% function matchInstant Volume Mousse vs Volumizing + Thickening MousseNioxin · 100% function matchPerfect hair Day Heat Styling Spray vs Instant Freeze Sculpting MousseAussie · 80% function matchInstant Volume Mousse vs EIMI Extra Volume Mousse Strong Hold Volumizing MousseWella · 100% function matchPerfect hair Day Heat Styling Spray vs Curl Boosting Mousse for Frizzy HairHerbal Essences · 80% function match

Instant Volume Mousse · Perfect hair Day Heat Styling 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.
  • 5 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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