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Side by side

Kerastase Kerastase Genesis Fondant Renforcateur Conditioner vs L'Oreal Paris Elvive Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair

95% function match · 9 of the 10 functions we compared match Formula overlap 92%. Kerastase Kerastase Genesis Fondant Renforcateur Conditioner and L'Oreal Paris Elvive Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair share 4 ingredients 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.

  • Kerastase Genesis Fondant Renforcateur Conditioner — protein-sensitive hair
  • Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair — 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
Kerastase Kerastase Genesis Fondant Renforcateur Conditioner — 6.8 oz container Kerastase

Kerastase Genesis Fondant Renforcateur Conditioner

  • Conditioner
  • Prestige
  • Sulfate-free
  • Silicone-free
L'Oreal Paris Elvive Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair — container, alternate view L'Oreal Paris Elvive

Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair

  • Conditioner
  • Drugstore
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$24 6.8 oz · $7.06/oz
$6.99 13.5 oz · $0.52/oz
Value / price positioning
Same job for less elsewhere $$$$$ Prestige tier · costs more than 96% of the 689 conditioners we’ve priced
Lower cost than most conditioners $$$$$ Drugstore tier · costs less than 89% of the 689 conditioners 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 Same
High Humectants near the top — water-binding is a headline mechanism here. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Oils and butters Same
Moderate Oils sit high in the list — a softening, coating formula. Your hair
Moderate Oils sit high in the list — a softening, coating formula. 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 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
Present Fragrance is listed; it sits below the working ingredients. 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
Moderate Your hair
Moderate Your hair
Hard-water defence Same
None No chelating agent in the list. Your hair
None No chelating agent in the list. Your hair
Formula completeness
out of 10
Complete for its job
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
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
Why you might skip it
  • Scents bother youthis product carries a scent
  • Hair that needs proteinthere is none in this list
  • Dry or very humid airwhere heavy humectants work against you
  • Scents bother youthis product carries a scent
  • Hair that needs proteinthere is none in this list
  • Dry or very humid airwhere heavy humectants work against you
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
Conditioner
Conditioner
Line
Genesis
Collagen Peptide + Lifter
Where to buy
Target
Grocery / mass · Brand website
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Vegan
—
Vegan · label states
Cruelty-free
Not cruelty-free · PETA-listed
—
Scent
Scented, not described
Scented, not described

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

IngredientKerastase Genesis Fondant Renforcateur ConditionerElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair
Water
Neutral
#1Leading
#1Leading
Cetearyl Alcohol
Softens
#2Leading
#2Leading
Stearamidopropyl Dimethylamine
Detangles
#3Leading
#7Below the 1% line
Isopropyl Myristate
Softens
#4Supporting
#5Supporting
Glycerin
Moisturizes
#5Supporting
#3Leading
Glycine Soja (Soybean) Oil
Softens
#6Supporting
#8Below the 1% line
Helianthus Annuus Seed Oil/Sunflower Seed Oil
Softens
#7Supporting
#13Below the 1% line
Coco-Caprylate/Caprate
Softens
#8Supporting
#9Below the 1% line
Salicylic Acid
Active
#12Below the 1% line
#14Below the 1% line
Linalool
Fragrance
#15Below the 1% line
#20Below the 1% line
Fragrance
Fragrance
#29Below the 1% line
#6Below the 1% line
Benzyl Alcohol
Stabilizes
#20Below the 1% line
#21Below the 1% line

What only one of them carries

Kerastase Genesis Fondant Renforcateur Conditioner

Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair

Full ingredient list — Kerastase Genesis Fondant Renforcateur Conditioner (29)
Full ingredient list — Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair (30)

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.

VerdictsKerastase Genesis Fondant Renforcateur ConditionerElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair
Supported
1
0
Partly supported
0
1
Stated by brand
2
2
Potential conflict
0
0

Kerastase Genesis Fondant Renforcateur Conditioner

  • Strengthens weakened hair to reduce breakage-related hair fallStated by brandCan’t be confirmed from label.
  • Nourishes and detangles without adding weightSupportedHelps hair feel hydrated.
  • Leaves hair feeling soft, smooth, and resilientStated by brandCan’t be confirmed from label.

Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair

  • 2x volume lift for 72 hours (with full system)Stated by brandOnly the brand’s testing shows this.
  • No Weigh-Down: delivers volume without added weightPartly supportedNeutral on lift.
  • 100% Vegan and Paraben-FreeStated 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.

Both praised for slip and the scent. L'Oreal Paris Elvive Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair draws complaints about residue or cast and the packaging.

Kerastase Genesis Fondant Renforcateur Conditioner

Lightweight hydration and softness without grease are recurring positives

Exact-product retailer/official reviewers

Scent, shine, smoothness, and detangling are commonly praised

Exact-product retailer/official reviewers

Some reviewers report knots, tangling, increased shedding, or scent dislike

Exact-product retailer/official reviewers

Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair

Reviewers praise the pleasant fragrance and effective detangling

Reviewers report a lightweight feel with a noticeable volume boost

Some reviewers describe the texture as sticky or tacky and hard to dispense

Reviewers with fine hair report a greasy appearance and limited volumizing effect

fine hair

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.

$0.52/oz vs $7.06/oz — Kerastase Kerastase Genesis Fondant Renforcateur Conditioner costs about 14× more per ounce than L'Oreal Paris Elvive Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair.

$0.09/oz median $1.60/oz $56.25/oz $7.06/oz Kerastase Genesis Fondant $0.52/oz Elvive Collagen Peptide +

Every mark sits on one distribution because these are compared against the same set: 689 conditioners with a computable unit price.

Value readKerastase Genesis Fondant Renforcateur ConditionerElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Lower cost than most conditionersCosts less per ounce than most conditioners 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.

Kerastase Genesis Fondant Renforcateur Conditioner vs Kerastase Resistance Ciment Anti-Usure ConditionerKerastase · 100% function matchElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair vs Extra Gentle ConditionerAttitude · 98% function matchKerastase Genesis Fondant Renforcateur Conditioner vs Lightweight ConditionerPattern Beauty · 98% function matchElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair vs Kids ConditionerAttitude · 98% function matchKerastase Genesis Fondant Renforcateur Conditioner vs Symbiose Fondant Apaisant Essentiel ConditionerKerastase · 95% function matchElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair vs Clarifying ConditionerAttitude · 98% function matchKerastase Genesis Fondant Renforcateur Conditioner vs Coconut Water Curl ConditionerCamille Rose · 95% function matchElvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair vs One Condition OriginalDevaCurl · 98% function match

Kerastase Genesis Fondant Renforcateur Conditioner · Elvive Collagen Peptide + Lifter Volumizing Conditioner for Thin, Flat Hair · All conditioners 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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