Side by side
K18 Leave-In Molecular Repair Hair Mask vs Taliah Waajid Curl Sealer
75% function match · 5 of the 6 functions we compared match Formula overlap 8%. K18 Leave-In Molecular Repair Hair Mask and Taliah Waajid Curl Sealer share 1 ingredient 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.
- Leave-In Molecular Repair Hair Mask — protein-hungry hair
- Curl Sealer — maximum slip
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 — 6 oz against 1.7 oz. Per-ounce prices favour the larger bottle.
- 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
- Curly-method routinesno sulfates and no water-insoluble silicones
- Maximum slipfor hair that tangles the moment it is wet
- Curl definitionfilm formers hold a clump together
- Short ingredient listsfifteen ingredients or fewer
- Tight budgetsit sits in the lower price tiers
- Scents bother youthis product carries a scent
- Protein-sensitive hairthat goes stiff or straw-like on protein
- Very dry or damaged hairit contains fast-drying alcohol
- Scents bother youthis product carries a scent
- Dry or very humid airwhere heavy humectants work against you
More facts about each one
- sulfate-free
- silicone-free
- curly-method compatible
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.
$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
What only one of them carries
Leave-In Molecular Repair Hair Mask
Curl Sealer
- Glycerin
- Polyquaternium-10
- Peg-14m
- Polyquaternium 37
- Yarrow Extract (Achillea Millefolium)
- Zizyphus Joazeiro Bark Extract
Full ingredient list — Leave-In Molecular Repair Hair Mask (23)
-
1
Water
- solvent
-
2
Alcohol Denat.
- drying alcohol
- solvent
-
3
Propylene Glycol
- humectant
- solvent
-
4
Cetearyl Alcohol
- fatty alcohol
- emollient
- thickener
-
5
Dicaprylyl Ether
- light ester
- emollient
-
6
Cetyl Esters
- light ester
- emollient
- thickener
-
7
Behentrimonium Chloride
- conditioning agent
- cleanser
-
8
Polysorbate 20
- solubilizer
- emulsifier
-
9
SH-Oligopeptide-78
- protein
-
10
Hydrolyzed Wheat Protein
- film former
- protein
- hydrolysed protein
-
11
Hydrolyzed Wheat Starch
- film former
- starch
-
12
Isopropyl Alcohol
- drying alcohol
- solvent
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
13
Tocopherol
- antioxidant
- vitamin
-
14
Phenoxyethanol
- preservative
-
15
Potassium Sorbate
- preservative
-
16
Citric Acid
- pH adjuster
- hard-water chelator
-
17
Fragrance
- fragrance
- declared fragrance
-
18
Geraniol
- fragrance
- named fragrance allergen
-
19
Linalool
- fragrance
- named fragrance allergen
-
20
Hexyl Cinnamal
- fragrance
- named fragrance allergen
-
21
Benzyl Alcohol
- preservative
- solvent
-
22
Amyl Salicylate
- fragrance
- named fragrance allergen
-
23
benzaldehyde
- fragrance
Full ingredient list — Curl Sealer (12)
-
1
Water
- solvent
-
2
Glycerin
- humectant
-
3
Polyquaternium-10
- conditioning agent
- film former
- polymer
-
4
Peg-14m
- emulsifier
- 5 Polyquaternium 37
-
6
Polysorbate 20
- solubilizer
- emulsifier
- 7 Yarrow Extract (Achillea Millefolium)
- 8 Zizyphus Joazeiro Bark Extract
- 9 Lemon Extract (Citrus Medica Limonum Fruit)
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
10
Caprylyl Glycol
- preservative
- humectant
-
11
Phenoxyethanol
- preservative
-
12
Fragrance
- fragrance
- declared fragrance
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.
Leave-In Molecular Repair Hair Mask
4-minute leave-in treatment to reverse hair damage
Stated by brandCan’t be confirmed from label.Works on the molecular level to reverse hair damage in just 4 minutes
Stated by brandCan’t be confirmed from label.Repairs damage from bleach + color, chemical services, and heat
SupportedReinforces a damaged strand.Works on all hair types
Stated by brandSee the fit panel instead.
Curl Sealer
Helps to stop frizz and lock in moisture for defined curls
SupportedHelps hair feel hydrated.Dries invisible for a flake-free shine
Stated by brandCan’t be confirmed from label.Shapes and seals curls, adds shine, prevents build-up
Stated 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.
Leave-In Molecular Repair Hair Mask
Strongest praise from users with visibly damaged/over-bleached hair; more modest impact reported on already-healthy hair
chemically damaged hairScent described as subtle/faintly medicinal rather than typical perfumed haircare scent
Price-to-value repeatedly flagged as expensive for the bottle size, though many conclude it is worth it for damaged hair
Mixed on weight -- lightweight for most, but over-applying causes heaviness per a subset of reviewers
Curl Sealer
Most reviewers leave brief, unqualified praise without describing a specific effect on their hair.
the majority of the brand-site reviewer base, across nearly a dozen reviews spanning several yearsPrice 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.
$0.01/oz vs $1.33/oz — Taliah Waajid Curl Sealer costs about 133× more per ounce than K18 Leave-In Molecular Repair Hair Mask.
Every mark sits on one distribution because these are compared against the same set: 477 leave-ins 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.
Leave-In Molecular Repair Hair Mask · Curl Sealer · All leave-ins 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.
Still unsure? Take your consultation or browse more products.
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