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Side by side

Kerastase Discipline Masque Oleo Relax vs Matrix Mega Sleek Smoothie Supreme Mask

10 of 10 functions match Formula overlap 26%. Kerastase Discipline Masque Oleo Relax and Matrix Mega Sleek Smoothie Supreme Mask share 3 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.

  • Discipline Masque Oleo Relax — protein-sensitive hair
  • Mega Sleek Smoothie Supreme Mask — 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 Discipline Masque Oleo Relax — 6.76 oz container Kerastase

Discipline Masque Oleo Relax

  • Mask / treatment
  • Prestige
  • Sulfate-free
  • Protein-free
Matrix Mega Sleek Smoothie Supreme Mask — 16.9 oz container Matrix

Mega Sleek Smoothie Supreme Mask

  • Mask / treatment
  • Prestige
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
$70 6.7 oz · $10.45/oz
$38–46 16.9 oz · $2.47/oz

Compared at different sizes — 16.9 oz against 6.7 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Same job for less elsewhere $$$$$ Prestige tier · costs more than 93% of the 347 masks and treatments we’ve priced
Priced with its peers $$$$$ Prestige tier · costs less than 62% of the 347 masks and treatments 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
Low Oils are present, but low enough to be a finishing touch. Your hair
Low Oils are present, but low enough to be a finishing touch. 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
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
Formula completeness
out of 10
A simple formula
out of 10
A simple formula
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
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • 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
  • 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
Mask / treatmentcream
Mask / treatment
Where to buy
Salons · Brand website
Salons · Grocery / mass
Free of
  • sulfate-free
  • protein-free
  • sulfate-free
  • protein-free
Vegan
—
Vegan · label states
Cruelty-free
Not cruelty-free · PETA-listed
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

IngredientDiscipline Masque Oleo RelaxMega Sleek Smoothie Supreme Mask
Water
Neutral
#1Leading
#1Leading
Glycerin
Moisturizes
#5Supporting
#4Supporting
Amodimethicone
Buildup
#6Supporting
#11Below the 1% line
Cetyl Esters
Softens
#7Supporting
#5Supporting
Fragrance
Fragrance
#28Below the 1% line
#7Below the 1% line

What only one of them carries

Discipline Masque Oleo Relax

Mega Sleek Smoothie Supreme Mask

Full ingredient list — Discipline Masque Oleo Relax (28)
Full ingredient list — Mega Sleek Smoothie Supreme Mask (27)

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.

VerdictsDiscipline Masque Oleo RelaxMega Sleek Smoothie Supreme Mask
Supported
2
2
Partly supported
0
0
Stated by brand
2
2
Potential conflict
0
0

Discipline Masque Oleo Relax

  • Heat protection up to 450°F (230°C)Stated by brandOnly lab testing can show this.
  • Long-lasting frizz and volume control, even in up to 80% humidityStated by brandOnly the brand’s testing shows this.
  • Leaves hair sleek and silky-smooth for up to 24 hoursSupportedSmoother strands, less frizz.
  • Restores softness and shine without weighing hair downSupportedReflects light for visible shine.

Mega Sleek Smoothie Supreme Mask

  • 96H of frizz controlSupportedSmoother strands, less frizz.
  • 12x more smoothnessStated by brandOnly the brand’s testing shows this.
  • Vibrant shineSupportedReflects light for visible shine.
  • 98% biodegradable formulaStated 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.

Kerastase Discipline Masque Oleo Relax draws complaints about weight and the scent.

Discipline Masque Oleo Relax

Many reviewers with thick, coarse, color-treated or dry hair say the mask leaves their hair noticeably softer, shinier and much less frizzy, often citing it as a long-term staple.

long-time users with thick, coarse, dry or color-treated hair

Some reviewers with fine or normal hair find the mask too heavy, reporting that it weighs hair down or leaves it feeling greasy, particularly near the roots.

reviewers with fine or normal hair

A number of reviewers describe the fragrance as unusually strong, with a few reporting headaches or an artificial scent compared with the original version.

scent-sensitive reviewers

A recurring complaint from long-time users is that the current formula feels thinner and less effective than the original Oleo-Relax masque, and several ask the brand to bring the old formula back.

reviewers who used the product for years before a reformulation

Mega Sleek Smoothie Supreme Mask

Multiple reviewers say the mask reduces frizz and leaves their hair feeling smooth, soft, and hydrated.

Many reviewers highlight the pleasant, clean fragrance of the mask as a favorite feature.

Several reviewers describe using this mask alongside the Mega Sleek shampoo and conditioner as one smoothing system.

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.

$2.47/oz vs $10.45/oz — Kerastase Discipline Masque Oleo Relax costs about 4.2× more per ounce than Matrix Mega Sleek Smoothie Supreme Mask.

$0.19/oz median $3.49/oz $24.50/oz $10.45/oz Discipline Masque Oleo Rel $2.47/oz Mega Sleek Smoothie Suprem

Every mark sits on one distribution because these are compared against the same set: 347 masks and treatments with a computable unit price.

Value readDiscipline Masque Oleo RelaxMega Sleek Smoothie Supreme Mask
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Priced with its peersSits in the middle of the range for masks and treatments 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.

Discipline Masque Oleo Relax vs Extreme Length Triple Action Treatment MaskRedken · 100% function matchMega Sleek Smoothie Supreme Mask vs Extreme Length Triple Action Treatment MaskRedken · 100% function matchDiscipline Masque Oleo Relax vs Dualsenses Sun Reflects 60sec TreatmentGoldwell · 99% function matchMega Sleek Smoothie Supreme Mask vs Dualsenses Sun Reflects 60sec TreatmentGoldwell · 99% function matchDiscipline Masque Oleo Relax vs Bonding MaskVerb · 98% function matchMega Sleek Smoothie Supreme Mask vs Deepshine Color Hydrate Replenishing MasqueRusk · 98% function matchDiscipline Masque Oleo Relax vs A Curl Can Dream Rich MaskMatrix · 98% function matchMega Sleek Smoothie Supreme Mask vs A Curl Can Dream Rich MaskMatrix · 98% function match

Discipline Masque Oleo Relax · Mega Sleek Smoothie Supreme Mask · 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.
  • 7 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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