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Side by side

Olaplex No.0 Intensive Bond Building Hair Treatment vs Olaplex Weightless Nourishing Mask

35% function match · 2 of the 10 functions we compared match Formula overlap 0%. Olaplex No.0 Intensive Bond Building Hair Treatment and Olaplex Weightless Nourishing Mask share 1 ingredient 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.

  • No.0 Intensive Bond Building Hair Treatment — fragrance-free
  • Weightless Nourishing 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
Olaplex No.0 Intensive Bond Building Hair Treatment — 5.2 oz container Olaplex

No.0 Intensive Bond Building Hair Treatment

  • Mask / treatment
  • Salon
  • Sulfate-free
  • Silicone-free
Olaplex Weightless Nourishing Mask — 6.76 oz container Olaplex

Weightless Nourishing Mask

  • Mask / treatment
  • Salon
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
$50–60 5.2 oz · $9.61/oz
$44–51 6.76 oz · $6.51/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 92% of the 357 masks and treatments we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 81% of the 357 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 Differs
None found No humectants found — nothing here pulls water into the hair. Your hair
Moderate Humectants in the working part of the formula. Your hair
Oils and butters Differs
None No oils or butters in the list. Your hair
Low Oils are present, but low enough to be a finishing touch. Your hair
Slip / detangling Differs
Little Nothing here is built to reduce combing force. Your hair
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Weight on hair Differs
Light Water-first and light: unlikely to flatten fine hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
None listed No fragrance is listed. Your hair
Present Fragrance is listed; it sits below the working ingredients. 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 Differs
None Nothing here needs a detergent wash to remove. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Low Your hair
Moderate Your hair
Formula completeness
out of 10
A simple formula
out of 10
Covers the core
Who should choose this
  • Fragrance-freeno fragrance (parfum) on the label
  • Protein-sensitive hairthat stiffens when protein is added
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Fine hairthat flattens under most products
  • 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
Why you might skip it
  • Hair that needs proteinthere is none in this list
  • Very dry hairno humectant appears in the list
  • Coarse, very dry hairthis is a light formula for its category
  • 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
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 / treatmentcream
Where to buy
Brand website · Salons · Grocery / mass …
Brand website · Specialty beauty
Free of
  • sulfate-free
  • silicone-free
  • fragrance-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • protein-free
Vegan
Vegan · label states
—
Cruelty-free
Cruelty-free · label states
—
Scent
—
Scented, not described
Use stage
Before shampoo (directions incomplete)
—
Start on
dry hair
—
Label wait
10 minutes
—
Needs
Olaplex N°3 Hair Perfector and a shampoo and a conditioner
—
How often
weekly
weekly

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

IngredientNo.0 Intensive Bond Building Hair TreatmentWeightless Nourishing Mask
Water
Neutral
#1Leading
#1Leading
Bis-Aminopropyl Diglycol Dimaleate
Detangles
#2Leading
#36Below the 1% line
Sodium Benzoate
Stabilizes
#3Leading
#54Below the 1% line
Phenoxyethanol
Stabilizes
#4Below the 1% line
#15Below the 1% line

What only one of them carries

No.0 Intensive Bond Building Hair Treatment

Nothing notable here that the others do not also carry.

Weightless Nourishing Mask

Full ingredient list — No.0 Intensive Bond Building Hair Treatment (4)
Full ingredient list — Weightless Nourishing Mask (58)

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.

VerdictsNo.0 Intensive Bond Building Hair TreatmentWeightless Nourishing Mask
Supported
2
0
Partly supported
0
0
Stated by brand
3
5
Potential conflict
0
0

No.0 Intensive Bond Building Hair Treatment

  • 68% more repair when used as a three-part system of N°0, N°3, and N°4 in just one useStated by brandOnly the brand’s testing shows this.
  • 68% better detangling, improved conditioning, and smootherStated by brandOnly the brand’s testing shows this.
  • 65% reduction in breakage when used with N°4Stated by brandOnly the brand’s testing shows this.
  • Color safe, vegan, suitable for chemically treated hairSupportedMatches our researched record.
  • Free from sulfates, silicones, phthalates, phosphates, paraben, MIC/MIT, proteinSupportedGentler on colour and coils.

Weightless Nourishing Mask

  • 2X HYDRATION INSTANTLYStated by brandOnly the brand’s testing shows this.
  • 2X VOLUME INSTANTLY AND ALL DAYStated by brandOnly the brand’s testing shows this.
  • 63% MORE SHINEStated by brandOnly the brand’s testing shows this.
  • UP TO 5 WASHES 75% HYDRATION RETENTIONStated by brandOnly the brand’s testing shows this.
  • REDUCES AND PREVENTS BREAKAGEStated by brandCan’t be confirmed from label.

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.

Olaplex No.0 Intensive Bond Building Hair Treatment draws complaints about volume and breakage; Olaplex Weightless Nourishing Mask draws complaints about tangling and dryness.

No.0 Intensive Bond Building Hair Treatment

Reviewers who use No.0 as the first step before No.3 Hair Perfector report visibly shinier, softer and more elastic hair, especially on color-treated or bleached hair.

reviewers pairing No.0 with No.3 on colored or damaged hair

Many reviewers say the spray nozzle dispenses a hard, narrow stream rather than a fine mist, making it difficult to distribute evenly and wasteful of product.

long-time and first-time users across hair types

Some reviewers on thin or fine hair say the product weighs hair down or gives no volume, especially when paired with the No.8 mask.

reviewers with fine or thin hair

A recurring minority of reviewers report the product made their hair drier, more breakage-prone or straw-like, sometimes describing it as an allergic reaction on the scalp or face.

reviewers with curly, fine or previously chemically-treated hair

Weightless Nourishing Mask

Reviewers report noticeably softer, shinier and less frizzy hair immediately after a single use

fine to medium hair users

A minority of reviewers say the mask leaves hair dry, tangled or coated with residue despite the weightless marketing

mixed hair types

The whipped, silicone-forward texture reads as lighter than a typical creamy mask, which some reviewers found surprising given the name

reviewers comparing to traditional richer masks

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.

$6.51/oz vs $9.61/oz — Olaplex No.0 Intensive Bond Building Hair Treatment costs about 1.5× more per ounce than Olaplex Weightless Nourishing Mask.

$0.19/oz median $3.50/oz $24.50/oz $9.61/oz No.0 Intensive Bond Buildi $6.51/oz Weightless Nourishing Mask

Every mark sits on one distribution because these are compared against the same set: 357 masks and treatments with a computable unit price.

Value readNo.0 Intensive Bond Building Hair TreatmentWeightless Nourishing Mask
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.

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.

No.0 Intensive Bond Building Hair Treatment vs Avocado Cream Moisture Repairing Hair MaskAlikay Naturals · 90% function matchWeightless Nourishing Mask vs Nutricurls Deep Treatment Waves & Curls MaskWella Professionals · 96% function matchNo.0 Intensive Bond Building Hair Treatment vs The Restless CircleDavines · 85% function matchWeightless Nourishing Mask vs ColorMotion+ Structure MaskWella Professionals · 96% function matchNo.0 Intensive Bond Building Hair Treatment vs Pre-WashHairstory · 85% function matchWeightless Nourishing Mask vs Tea Tree Oil Revitalizing MasqueCHI · 96% function matchNo.0 Intensive Bond Building Hair Treatment vs Perfectly PolishedKinky-Curly · 85% function matchWeightless Nourishing Mask vs Hydra Gloss Sulfate-Free 5-Min Hair GlossSuave · 92% function match

No.0 Intensive Bond Building Hair Treatment · Weightless Nourishing 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.
  • 12 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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