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.
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”.
Compared at different sizes — 12 oz against 5 oz. Per-ounce prices favour the larger bottle.
- 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
- 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
More facts about each one
- sulfate-free
- sulfate-free
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.
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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
What only one of them carries
Biotin Boost Thickening Conditioner
Full ingredient list — Biotin Boost Thickening Conditioner (35)
-
1
Water
- solvent
-
2
Cetearyl Alcohol
- fatty alcohol
- emollient
- thickener
-
3
Caprylic/Capric Triglyceride
- light ester
- emollient
-
4
Cyclopentasiloxane
- silicone
- emollient
-
5
Isopropyl Palmitate
- light ester
- emollient
-
6
Biotin
- vitamin
-
7
Hydrolyzed Collagen
- film former
- protein
- hydrolysed protein
-
8
Coffea Arabica (Coffee) Seed Oil
- oil
- emollient
-
9
Cocos Nucifera (Coconut) Oil
- oil
- emollient
-
10
Glycerin
- humectant
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
11
Caprylyl Glycol
- preservative
- humectant
-
12
Polyquaternium-68
- conditioning agent
- film former
- polymer
-
13
VP/VA Copolymer
- film former
- polymer
-
14
Zea Mays (Corn) Starch
- starch
- powder
- 15 Dicetyl Phosphate
- 16 Ceteth-10 Phosphate
-
17
Glyceryl Stearate Se
- emulsifier
- emollient
-
18
Ammonium Acryloyldimethyltaurate/Vp Copolymer
- film former
- polymer
-
19
Hydroxyethylcellulose
- gum
- thickener
- film former
-
20
Disodium EDTA
- hard-water chelator
-
21
Ethylhexylglycerin
- preservative
- emollient
-
22
Hexylene Glycol
- solvent
- humectant
-
23
Phenoxyethanol
- preservative
-
24
Sodium Benzoate
- preservative
-
25
Sodium Hydroxide
- pH adjuster
-
26
Behenyl Alcohol
- fatty alcohol
- emollient
- thickener
-
27
Fragrance
- fragrance
- declared fragrance
-
28
Linalool
- fragrance
- named fragrance allergen
-
29
Eugenol
- fragrance
- named fragrance allergen
-
30
Citronellol
- fragrance
- named fragrance allergen
-
31
hydroxycitronellol
- fragrance
-
32
Geraniol
- fragrance
- named fragrance allergen
-
33
Coumarin
- fragrance
- named fragrance allergen
-
34
Alpha-Isomethyl Ionone
- fragrance
- named fragrance allergen
-
35
Benzyl Salicylate
- fragrance
- named fragrance allergen
Full ingredient list — SMOOTH Conditioner (26)
-
1
Water
- solvent
-
2
Cetearyl Alcohol
- fatty alcohol
- emollient
- thickener
-
3
Dimethicone
- silicone
- emollient
- conditioning agent
-
4
Behentrimonium Chloride
- conditioning agent
- cleanser
-
5
Glycerin
- humectant
-
6
Dimethiconol
- silicone
- emollient
-
7
Hydrolyzed Wheat Protein
- film former
- protein
- hydrolysed protein
-
8
Persea Gratissima (Avocado) Oil
- oil
- emollient
-
9
Butyrospermum Parkii (Shea) Butter
- butter
- emollient
- sealant
-
10
Cocos Nucifera (Coconut) Oil
- oil
- emollient
-
11
Stearamidopropyl Dimethylamine
- conditioning agent
-
12
Isopropyl Alcohol
- drying alcohol
- solvent
-
13
Hydroxyethylcellulose
- gum
- thickener
- film former
-
14
Salicylic Acid
- active
- exfoliant
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
15
Disodium EDTA
- hard-water chelator
-
16
Laureth-23
- emulsifier
- solubilizer
-
17
TEA-Dodecylbenzenesulfonate
- cleanser
-
18
C12-15 Pareth-3
- emulsifier
-
19
Citric Acid
- pH adjuster
- hard-water chelator
-
20
Cocamidopropyl Betaine
- amphoteric cleanser
- secondary cleanser
- cleanser
-
21
Guar Hydroxypropyltrimonium Chloride
- conditioning agent
- polymer
- gum
-
22
Ethylhexylglycerin
- preservative
- emollient
-
23
Phenoxyethanol
- preservative
-
24
Fragrance
- fragrance
- declared fragrance
-
25
Hexyl Cinnamal
- fragrance
- named fragrance allergen
-
26
Linalool
- fragrance
- named fragrance allergen
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.
Biotin Boost Thickening Conditioner
Ideal for daily use
Stated by brandCan’t be confirmed from label.For best results, use the Hask Biotin Boost Collection
Stated by brandHow to use it, not a claim.
SMOOTH Conditioner
Award-winning formulation
Stated by brandPopularity, not performance.No sulfates or parabens
SupportedGentler on colour and coils.Certified cruelty-free
SupportedMatches our researched record.Dermatologically tested
Stated by brandOnly the brand’s testing shows this.Recyclable bottles
Stated by brandCan’t be confirmed from label.Subtle gardenia scent
Stated by brandCan’t be confirmed from label.Wheat Protein locks in moisture and helps prevent frizz; Avocado Oil creates a protective barrier
SupportedHelps 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.
Every mark sits on one distribution because these are compared against the same set: 689 conditioners with a computable unit price.
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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