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Side by side

Garnier Fructis Grow Strong 10-in-1 Hair Protection Leave-In Treatment vs Garnier Fructis Sleek & Shine Sleek & Stay Heat-Activated Serum

71% function match · 6 of the 10 functions we compared match Formula overlap 0%. Garnier Fructis Grow Strong 10-in-1 Hair Protection Leave-In Treatment and Garnier Fructis Sleek & Shine Sleek & Stay Heat-Activated Serum 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.

  • Grow Strong 10-in-1 Hair Protection Leave-In Treatment — maximum slip
  • Sleek & Shine Sleek & Stay Heat-Activated Serum — 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
Garnier Fructis Grow Strong 10-in-1 Hair Protection Leave-In Treatment — 12 oz container Garnier Fructis

Grow Strong 10-in-1 Hair Protection Leave-In Treatment

  • Leave-in
  • Drugstore
  • Sulfate-free
Garnier Fructis Sleek & Shine Sleek & Stay Heat-Activated Serum — 1.7 oz container Garnier Fructis

Sleek & Shine Sleek & Stay Heat-Activated Serum

  • Leave-in
  • Drugstore
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
$9.99 12 oz · $0.83/oz
$8.67 1.7 oz · $5.13/oz

Compared at different sizes — 12 oz against 1.7 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Lower cost than most leave-ins $$$$$ Drugstore tier · costs less than 88% of the 481 leave-ins we’ve priced
Upper-mid price for a leave-in $$$$$ Drugstore tier · costs more than 59% of the 904 leave-ins we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Differs
Low Humectants appear, but low enough to be a minor part. Your hair
None found No humectants found — nothing here pulls water into the hair. 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
Slip / detangling Differs
High Conditioning agents sit high in the list — this is a detangling formula. 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 Differs
Minor Protein appears, low enough to be a supporting ingredient. 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
Heat protection
—
Stated to 450°F The brand states a protection temperature — a label claim, not a measurement. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
A simple formula
Who should choose this
  • Maximum slipfor hair that tangles the moment it is wet
  • Curl definitionfilm formers hold a clump together
  • Porous, damaged hairceramides are in the list
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • Heat stylingthe brand states protection to 450°F
  • Protein-sensitive hairthat stiffens when protein is added
  • Curl definitionfilm formers hold a clump together
  • Very dry hairno fast-drying alcohol in the list
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Very dry or damaged hairit contains fast-drying alcohol
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Hair that needs proteinthere is none in this list
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
Leave-incream
Leave-inserum
Where to buy
Brand website
Brand website · Target
Free of
  • sulfate-free
  • sulfate-free
  • protein-free
Scent
Scented, not described
Fresh & airy
Heat protection
—
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

IngredientGrow Strong 10-in-1 Hair Protection Leave-In TreatmentSleek & Shine Sleek & Stay Heat-Activated Serum
Fragrance
Fragrance
#6Below the 1% line
#4Below the 1% line

What only one of them carries

Grow Strong 10-in-1 Hair Protection Leave-In Treatment

Sleek & Shine Sleek & Stay Heat-Activated Serum

Full ingredient list — Grow Strong 10-in-1 Hair Protection Leave-In Treatment (29)
Full ingredient list — Sleek & Shine Sleek & Stay Heat-Activated Serum (4)

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.

VerdictsGrow Strong 10-in-1 Hair Protection Leave-In TreatmentSleek & Shine Sleek & Stay Heat-Activated Serum
Supported
0
2
Partly supported
1
2
Stated by brand
1
2
Potential conflict
0
0

Grow Strong 10-in-1 Hair Protection Leave-In Treatment

  • Grow Strong 10-in-1 leave-in cream cuts your haircare and styling routine into just one simple stepStated by brandCan’t be confirmed from label.
  • Hair is left moisturized, smooth, and detangledPartly supportedSome hydration, at a low level.

Sleek & Shine Sleek & Stay Heat-Activated Serum

  • Heat-activated leave-in anti-frizz hair serumSupportedSmoother strands, less frizz.
  • Ultra glassy sleek that lasts up to 5 washesStated by brandCan’t be confirmed from label.
  • Heat protection up to 450FPartly supportedSold for hot tools; untestable here.
  • Non-greasy and water-resistant formulaPartly supportedDepends how fine your hair is.
  • Infused with alpha-silanes for long-lasting smoothnessStated by brandCheck the position, not the name.
  • Formulated without parabens, phthalates, and DMDM HydantoinSupportedPreserved without parabens.

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 a light feel and frizz control. Garnier Fructis Grow Strong 10-in-1 Hair Protection Leave-In Treatment draws complaints about tangling.

Grow Strong 10-in-1 Hair Protection Leave-In Treatment

Fine or straight-haired users report very soft hair and easy detangling without weigh-down.

Tkg739 and Susan, fine or curly family hair; retailer verified reviews

Fine, long, dry or frizz-prone users report lightweight moisture, softness, fullness, and shine lasting several days.

ErinPeaceJoy, dry dull brown hair; official brand reviewer

Normal-hair reviewers describe the formula as non-heavy, non-sticky, and non-oily.

Rooby, normal hair; official brand reviewer

A reformulation complaint says added silicone weighs hair down and increases tangling versus the older formula.

Rach41886, 35-44, Wallington NJ; official brand reviewer

Sleek & Shine Sleek & Stay Heat-Activated Serum

Leaves hair smoother and frizz-free without feeling weighed down

Effective, affordable heat protectant, works well on thick curly-wavy hair

Develops a fishy/peculiar odor over time for some users

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 $5.13/oz — Garnier Fructis Sleek & Shine Sleek & Stay Heat-Activated Serum costs about 6.2× more per ounce than Garnier Fructis Grow Strong 10-in-1 Hair Protection Leave-In Treatment.

$0.01/oz median $2.17/oz $76.00/oz $0.83/oz Grow Strong 10-in-1 Hair P $5.13/oz Sleek & Shine Sleek & Stay

Every mark sits on one distribution because these are compared against the same set: 481 leave-ins with a computable unit price.

Value readGrow Strong 10-in-1 Hair Protection Leave-In TreatmentSleek & Shine Sleek & Stay Heat-Activated Serum
Label
Lower cost than most leave-insCosts less per ounce than most leave-ins we have researched.
Upper-mid price for a leave-inSits in the middle of the range for leave-ins 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.

Grow Strong 10-in-1 Hair Protection Leave-In Treatment vs Blond Absolu Cicaplasme Thermique Heat Protecting CreamKerastase · 95% function matchSleek & Shine Sleek & Stay Heat-Activated Serum vs Mega Sleek 96H Anti-Frizz TopcoatMatrix · 100% function matchGrow Strong 10-in-1 Hair Protection Leave-In Treatment vs Miracle Rescue Instant Repair Leave-On with Melting Pro-V PearlsPantene · 95% function matchSleek & Shine Sleek & Stay Heat-Activated Serum vs Mega Sleek 96H Anti-Frizz Topcoat Smoothing Hair SerumMatrix · 99% function matchGrow Strong 10-in-1 Hair Protection Leave-In Treatment vs A Curl Can Dream Scrunch N' Go Defining SprayMatrix · 95% function matchSleek & Shine Sleek & Stay Heat-Activated Serum vs Humidity-Defying Serumion · 99% function matchGrow Strong 10-in-1 Hair Protection Leave-In Treatment vs Smooth Proof Leave-In Conditioning CreamBiolage · 90% function matchSleek & Shine Sleek & Stay Heat-Activated Serum vs Olive Oil Thermalast Heat Protection SerumORS · 95% function match

Grow Strong 10-in-1 Hair Protection Leave-In Treatment · Sleek & Shine Sleek & Stay Heat-Activated Serum · All leave-ins 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.
  • 8 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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