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Side by side

Paul Mitchell Super Skinny Serum vs Sexy Hair Style Prep Me 450F Heat Protection Blow Dry Primer

86% function match · 9 of the 10 functions we compared match Formula overlap 0%. Paul Mitchell Super Skinny Serum and Sexy Hair Style Prep Me 450F Heat Protection Blow Dry Primer share no ingredient among each other's most prominent — which does not stop them doing the same job.

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.

  • Super Skinny Serum — heat styling
  • Style Prep Me 450F Heat Protection Blow Dry Primer — 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
Paul Mitchell Super Skinny Serum — 5.1 oz container Paul Mitchell

Super Skinny Serum

  • Heat protectant
  • Salon
  • Sulfate-free
  • Protein-free
Sexy Hair Style Prep Me 450F Heat Protection Blow Dry Primer — container, alternate view Sexy Hair

Style Prep Me 450F Heat Protection Blow Dry Primer

  • Heat protectant
  • Salon
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
$12 5.1 oz · $4.17/oz
$14.99 5.1 oz · $3.03/oz
Value / price positioning
Priced with its peers $$$$$ Salon tier · costs less than 64% of the 574 heat protectants we’ve priced
Priced with its peers $$$$$ Salon tier · costs less than 69% of the 223 heat protectants we’ve priced
Best for hair types
Straight–Curly Smoothing and thermal products span straight through curly hair. Your hair
Straight–Curly Smoothing and thermal products span straight through curly hair. Your hair
Moisture level Same
None found No humectants found — nothing here pulls water into the hair. Your hair
None found No humectants found — nothing here pulls water into the hair. Your hair
Heat protection
High The brand states a protection temperature — a label claim, not a measurement. Your hair
High The brand states a protection temperature — a label claim, not a measurement. Your hair
Slip / detangling Same
Some Some slip, mostly from esters or silicones rather than conditioners. Your hair
Some Some slip, mostly from esters or silicones rather than conditioners. Your hair
Weight on hair Same
Medium Middle of the range — noticeable on fine hair, light on coarse 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
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
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
Moderate 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
  • Heat stylingthe brand states protection to 450°F
  • Protein-sensitive hairthat stiffens when protein is added
  • Very dry hairno fast-drying alcohol in the list
  • A wide range of haira middle-of-the-range weight
  • Heat stylingthe brand states protection to 450°F
  • Protein-sensitive hairthat stiffens when protein is added
  • Very dry hairno fast-drying alcohol in the list
  • A wide range of haira middle-of-the-range weight
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Tight budgetsit sits in the upper price tiers
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Tight budgetsit sits in the upper price tiers
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
Heat protectantserum
Heat protectantlotion
Where to buy
Brand website
Brand website
Free of
  • sulfate-free
  • protein-free
  • sulfate-free
  • protein-free
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
Heat protection
up to 450°F
up to 450°F

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

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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

IngredientSuper Skinny SerumStyle Prep Me 450F Heat Protection Blow Dry Primer
Fragrance
Fragrance
#4Below the 1% line
#7Below the 1% line
Hexyl Cinnamal
Fragrance
#6Below the 1% line
#20Below the 1% line
Linalool
Fragrance
#8Below the 1% line
#19Below the 1% line
Limonene
Fragrance
#9Below the 1% line
#18Below the 1% line

What only one of them carries

Super Skinny Serum

Style Prep Me 450F Heat Protection Blow Dry Primer

Full ingredient list — Super Skinny Serum (16)
Full ingredient list — Style Prep Me 450F Heat Protection Blow Dry Primer (24)

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.

VerdictsSuper Skinny SerumStyle Prep Me 450F Heat Protection Blow Dry Primer
Supported
1
0
Partly supported
0
0
Stated by brand
5
3
Potential conflict
0
0

Super Skinny Serum

  • #1 Smoothing Serum Sold in Salons (Kline data Q3 2024-Q2 2025)Stated by brandPopularity, not performance.
  • Best-selling blowout primer protects from heat with reduced drying timeStated by brandPopularity, not performance.
  • One Super Skinny Serum is sold every 20 secondsStated by brandCan’t be confirmed from label.
  • Humidity-resistant formula protects against frizzStated by brandMay help, but not measurable here.
  • Lightweight silicones coat and seal each strandSupportedSmoother strands, less frizz.
  • Very concentrated, use sparinglyStated by brandCan’t be confirmed from label.

Style Prep Me 450F Heat Protection Blow Dry Primer

  • Get the most from the heat without the hot messStated by brandCan’t be confirmed from label.
  • Humidity resistance to reduce the frizz and smooth the hairStated by brandMay help, but not measurable here.
  • 71% reduction in breakageStated by brandOnly the brand’s testing shows this.

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.

Paul Mitchell Super Skinny Serum draws complaints about the scent and residue or cast.

Super Skinny Serum

Controls stray hair and frizz without grease for some users

Jules, Ulta reviewer

Smooths hair and improves shine with a small amount

Ulta reviewers

Current formula can feel oily, sticky, or have an altered scent

Jerky, kjok1212, and Jane, Ulta reviewers

Style Prep Me 450F Heat Protection Blow Dry Primer

smoother hair, easier blow-dry

Makes hair more smooth and easier to blow dry.

daily staple paired with styling mousse

Daily-use staple paired with styling mousse.

heat protection reassurance

Heat protection reassurance up to the stated temperature; one reviewer restated the breakage reduction as "up to 70%" vs the official 71%.

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.

$3.03/oz vs $4.17/oz — Paul Mitchell Super Skinny Serum costs about 1.4× more per ounce than Sexy Hair Style Prep Me 450F Heat Protection Blow Dry Primer.

$0.02/oz median $6.00/oz $227.72/oz $4.17/oz Super Skinny Serum $3.03/oz Style Prep Me 450F Heat Pr

Every mark sits on one distribution because these are compared against the same set: 574 heat protectants with a computable unit price.

Value readSuper Skinny SerumStyle Prep Me 450F Heat Protection Blow Dry Primer
Label
Priced with its peersSits in the middle of the range for heat protectants per ounce.
Priced with its peersSits in the middle of the range for heat protectants per ounce.

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.

Super Skinny Serum vs Clear Smoothing Serum (Blowout Primer)Paul Mitchell · 99% function matchStyle Prep Me 450F Heat Protection Blow Dry Primer vs Sleek & Shine Sleek & Stay Heat-Activated SerumGarnier Fructis · 93% function matchSuper Skinny Serum vs Clear Smoothing SerumPaul Mitchell · 99% function matchStyle Prep Me 450F Heat Protection Blow Dry Primer vs Mega Sleek 96H Anti-Frizz TopcoatMatrix · 93% function matchSuper Skinny Serum vs Platinum Silkening GlossKenra Professional · 99% function matchStyle Prep Me 450F Heat Protection Blow Dry Primer vs Olive Oil Thermalast Heat Protection SerumORS · 88% function matchSuper Skinny Serum vs Light Luminous Reflective OilWella · 95% function matchStyle Prep Me 450F Heat Protection Blow Dry Primer vs Color Maintenance Thermal Spray 11Kenra · 83% function match

Super Skinny Serum · Style Prep Me 450F Heat Protection Blow Dry Primer · All heat protectants 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.
  • 10 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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