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Side by side

Biolage Full Rescue Restorative Mask vs Kerastase Specifique Masque Rehydratant

95% function match · 9 of the 10 functions we compared match Formula overlap 86%. Biolage Full Rescue Restorative Mask and Kerastase Specifique Masque Rehydratant 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.

  • Full Rescue Restorative Mask — maximum slip
  • Specifique Masque Rehydratant — 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
Biolage Full Rescue Restorative Mask — 16.9 oz container Biolage

Full Rescue Restorative Mask

  • Mask / treatment
  • Salon
  • Sulfate-free
  • Silicone-free
Kerastase Specifique Masque Rehydratant — 6.76 oz container Kerastase

Specifique Masque Rehydratant

  • Mask / treatment
  • Prestige
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$33.93 16.9 oz · $2.36/oz
$63.15 6.76 oz

Compared at different sizes — 16.9 oz against 6.76 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Priced with its peers $$$$$ Salon tier · costs less than 64% of the 347 masks and treatments we’ve priced
Not enough priced masks and treatments to place it Prestige tier
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
Moderate Humectants in the working part of the formula. Your hair
Moderate Humectants in the working part of the formula. Your hair
Time on the hair
Short A short wait — it fits inside an ordinary shower. Your hair
Short A few minutes on the hair before rinsing. 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
Present Fragrance is listed; it sits below the working ingredients. 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
Oils and butters Same
None No oils or butters in the list. Your hair
None No oils or butters in the list. Your hair
Formula completeness
out of 10
Covers the core
out of 10
Covers the core
Who should choose this
  • Maximum slipfor hair that tangles the moment it is wet
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Silicone-free routinesno silicones appear in the list
  • Matte, textured stylesabsorbent powders do the mattifying
  • 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
  • Very dry or damaged hairit contains fast-drying alcohol
  • Stretching wash dayswaxes stay until a detergent wash removes them
  • Scents bother youthis product carries a scent
  • Very dry or damaged hairit contains fast-drying alcohol
  • Stretching wash dayswaxes stay until a detergent wash removes them
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
Mask / treatment
Mask / treatment
Where to buy
Salons · Brand website · Ulta …
Lookfantastic · Salons
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Cruelty-free
—
Not cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
Time on hair
3–5 min
5–10 min
How often
weekly
—
Treatment focus
protein
moisture

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

IngredientFull Rescue Restorative MaskSpecifique Masque Rehydratant
Water
Neutral
#1Leading
#1Leading
Hydroxypropyl Starch Phosphate
Holds
#2Leading
#2Leading
Quaternium-87
Detangles
#4Supporting
#3Leading
Stearyl Alcohol
Softens
#5Supporting
#4Supporting
Behentrimonium Chloride
Detangles
#6Supporting
#5Supporting
Isononyl Isononanoate
Softens
#7Supporting
#7Supporting
Fragrance
Fragrance
#10Below the 1% line
#23Below the 1% line
Euphorbia Cerifera (Candelilla) Wax
Buildup
#14Below the 1% line
#11Below the 1% line
Isopropyl Alcohol
Drying
#15Below the 1% line
#12Below the 1% line
Limonene
Fragrance
#17Below the 1% line
#16Below the 1% line
Propylene Glycol
Moisturizes
#11Below the 1% line
#6Supporting
Cetyl Esters
Softens
#9Secondary
#8Supporting
Linalool
Fragrance
#24Below the 1% line
#15Below the 1% line

What only one of them carries

Full Rescue Restorative Mask

Specifique Masque Rehydratant

Nothing notable here that the others do not also carry.

Full ingredient list — Full Rescue Restorative Mask (28)
Full ingredient list — Specifique Masque Rehydratant (23)

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.

VerdictsFull Rescue Restorative MaskSpecifique Masque Rehydratant
Supported
0
2
Partly supported
1
1
Stated by brand
3
0
Potential conflict
0
1

Full Rescue Restorative Mask

  • 15x smoother hair after one useStated by brandOnly the brand’s testing shows this.
  • 71% more hydration after one useStated by brandOnly the brand’s testing shows this.
  • immediately fuller looking hairStated by brandNot something a label can show.
  • conditions, strengthens, and softens strandsPartly supportedSupports the surface, not a treatment.

Specifique Masque Rehydratant

  • provides intense hydration to dry, damaged hairSupportedHelps hair feel hydrated.
  • infused with amino acids and ceramidesPotential conflictNot in the ingredient list.
  • promotes smooth and silky appearanceSupportedSmoother strands, less frizz.
  • boosts softness and shinePartly supportedA hint of gloss.

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 shine and strength and repair.

Full Rescue Restorative Mask

Improves shine and softness with pleasant scent

Amazon reviewer "Miranda M." (Canada), 5 stars: "This hair mask is awesome! I leave it on my hair for about half an hour! The smell is so nice and my hair is shiny and soft!"

Helped reduce postpartum breakage

Amazon reviewer describing postpartum hair loss, 5 stars: "Made my postpartum breakage turn into growth without any other effort...this is soooo worth it."

Can leave fine/thin hair feeling overly soft or limp

Amazon reviewer, 3 stars: "It's good quality, and there's a good amount of product in the jar, but it leaves my thin hair too soft."

Specifique Masque Rehydratant

Hydrates fine or dry hair without weighing it down and restores shine

Exact official/Sephora reviewers

Gel texture strengthens and nourishes damaged lengths

Exact product reviewers

Some thick/coarse reviewers find the result only moderate

Exact Sephora reviewer

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.

Full Rescue Restorative Mask

Against 347 masks and treatments with a computable unit price.

Value readFull Rescue Restorative MaskSpecifique Masque Rehydratant
Label
Priced with its peersSits in the middle of the range for masks and treatments per ounce.
Not enough priced masks and treatments to place itWe need more comparable products before we can place this.

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.

Full Rescue Restorative Mask vs Babassu & Mint Damage Repair Bond TreatmentMielle Organics · 90% function matchSpecifique Masque Rehydratant vs Frizz + Repair Treatment Mask, Fragrance FreeSEEN · 90% function matchFull Rescue Restorative Mask vs Babassu Oil & Mint Deep ConditionerMielle Organics · 90% function matchSpecifique Masque Rehydratant vs Weightless Hydration MaskCeremonia · 88% function matchFull Rescue Restorative Mask vs Densifique Masque DensiteKerastase · 85% function matchSpecifique Masque Rehydratant vs The Quick Fix CircleDavines · 85% function matchFull Rescue Restorative Mask vs Apple Cider Vinegar Hair MasquedpHUE · 85% function matchSpecifique Masque Rehydratant vs Vegan Hair Deep Conditioner Strengthening Hair Mask with Almond & Shea ButterNative · 85% function match

Full Rescue Restorative Mask · Specifique Masque Rehydratant · All masks and treatments 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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