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Side by side

Hask Biotin Boost Thickening Conditioner vs MONDAY Haircare SMOOTH Conditioner

86% function match · 7 of the 10 functions we compared match Formula overlap 36%. Hask Biotin Boost Thickening Conditioner and MONDAY Haircare SMOOTH Conditioner 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.

  • Biotin Boost Thickening Conditioner — protein-hungry hair
  • SMOOTH Conditioner — protein-hungry 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
Hask Biotin Boost Thickening Conditioner — brand photograph Hask

Biotin Boost Thickening Conditioner

  • Conditioner
  • Drugstore
  • Sulfate-free
MONDAY Haircare SMOOTH Conditioner — 12 oz container MONDAY Haircare

SMOOTH Conditioner

  • Conditioner
  • Drugstore
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$8.99 5 oz · $1.54/oz
$7.49 12 oz · $0.62/oz

Compared at different sizes — 12 oz against 5 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Priced with its peers $$$$$ Drugstore tier · costs less than 52% of the 689 conditioners we’ve priced
Lower cost than most conditioners $$$$$ Drugstore tier · costs less than 85% 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 Differs
Moderate Humectants in the working part of the formula. 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 Differs
Moderate Conditioning agents are present, lower in the list. 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 Same
Prominent Protein high in the list — a strengthening formula, not a moisture one. Your hair
Prominent Protein high in the list — a strengthening formula, not a moisture one. 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
High Your hair
High Your hair
Hard-water defence Same
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Formula completeness
out of 10
Covers the core
out of 10
Complete for its job
Who should choose this
  • Protein-hungry hairthat stretches and stays stretched when wet
  • Very dry hairno fast-drying alcohol in the list
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • A wide range of haira middle-of-the-range weight
  • Protein-hungry hairthat stretches and stays stretched when wet
  • 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
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Protein-sensitive hairthat goes stiff or straw-like on protein
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Protein-sensitive hairthat goes stiff or straw-like on protein
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
Conditionercream
Conditioner
Where to buy
Grocery / mass · Specialty beauty
Target · Costco · Brand website
Free of
  • sulfate-free
  • sulfate-free
Vegan
Not vegan · ingredient list
Cruelty-free
Cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
How often
every wash

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

IngredientBiotin Boost Thickening ConditionerSMOOTH Conditioner
Water
Neutral
#1Leading
#1Leading
Cetearyl Alcohol
Softens
#2Leading
#2Leading
Fragrance
Fragrance
#27Below the 1% line
#24Below the 1% line
Linalool
Fragrance
#28Below the 1% line
#26Below the 1% line
Glycerin
Moisturizes
#10Secondary
#5Supporting
Ethylhexylglycerin
Softens
#21Below the 1% line
#22Below the 1% line
Phenoxyethanol
Stabilizes
#23Below the 1% line
#23Below the 1% line

What only one of them carries

Full ingredient list — Biotin Boost Thickening Conditioner (35)
Full ingredient list — SMOOTH Conditioner (26)

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.

VerdictsBiotin Boost Thickening ConditionerSMOOTH Conditioner
Supported
0
3
Partly supported
0
0
Stated by brand
2
4
Potential conflict
0
0

Biotin Boost Thickening Conditioner

  • Ideal for daily useStated by brandCan’t be confirmed from label.
  • For best results, use the Hask Biotin Boost CollectionStated by brandHow to use it, not a claim.

SMOOTH Conditioner

  • Award-winning formulationStated by brandPopularity, not performance.
  • No sulfates or parabensSupportedGentler on colour and coils.
  • Certified cruelty-freeSupportedMatches our researched record.
  • Dermatologically testedStated by brandOnly the brand’s testing shows this.
  • Recyclable bottlesStated by brandCan’t be confirmed from label.
  • Subtle gardenia scentStated by brandCan’t be confirmed from label.
  • Wheat Protein locks in moisture and helps prevent frizz; Avocado Oil creates a protective barrierSupportedHelps hair feel hydrated.

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.

Biotin Boost Thickening Conditioner

No review themes researched for this product yet.

SMOOTH Conditioner

Many reviewers say the conditioner leaves hair feeling soft with a shine they like, and several call out the gardenia scent by name.

A recurring complaint is that the conditioner leaves hair feeling oily or is difficult to rinse out completely.

Multiple reviewers note it performs better on fine or frizzy hair than on thick hair, where results are more mixed.

Several reviewers report it tames frizz well in a lightweight formula that doesn't weigh hair down.

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.

$0.62/oz vs $1.54/oz — Hask Biotin Boost Thickening Conditioner costs about 2.5× more per ounce than MONDAY Haircare SMOOTH Conditioner.

$0.09/oz median $1.60/oz $56.25/oz $1.54/oz Biotin Boost Thickening Co $0.62/oz SMOOTH Conditioner

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

Value readBiotin Boost Thickening ConditionerSMOOTH Conditioner
Label
Priced with its peersSits in the middle of the range for conditioners per ounce.
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.

Biotin Boost Thickening Conditioner · SMOOTH Conditioner · 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.
  • 5 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.
  • This particular combination is not listed in our sitemap: we only submit pairs of comparable products that our similarity data says people would actually weigh against each other.

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