Side by side
It's a 10 Coily Miracle Leave-In vs Sexy Hair Healthy Seal the Deal Split End Mender Lotion
93% function match · 9 of the 10 functions we compared match Formula overlap 29%. It's a 10 Coily Miracle Leave-In and Sexy Hair Healthy Seal the Deal Split End Mender Lotion share 4 ingredients among each other's most prominent.
These sit in different steps of a routine — It's a 10 Coily Miracle Leave-In is a leave-in and Sexy Hair Healthy Seal the Deal Split End Mender Lotion is a heat protectant. Comparing their formulas is fair; treating one as a replacement for the other is not.
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.
- Coily Miracle Leave-In — heat styling
- Healthy Seal the Deal Split End Mender Lotion — heat styling
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”.
Sexy Hair
Healthy Seal the Deal Split End Mender Lotion
- Heat protectant
- Salon
- Sulfate-free
- Moisture-rich
- Heat stylingthe brand positions this as a heat protectant
- Maximum slipfor hair that tangles the moment it is wet
- Dry, thirsty hairhumectants and emollients both sit up front
- Curl definitionfilm formers hold a clump together
- Heat stylingthe brand states protection to 450°F
- Maximum slipfor hair that tangles the moment it is wet
- Dry, thirsty hairhumectants and emollients both sit up front
- A wide range of haira middle-of-the-range weight
- 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 strong scent
- Curly-method routinesthese silicones need a detergent to remove
- Very dry or damaged hairit contains fast-drying alcohol
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.
$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
Coily Miracle Leave-In
Healthy Seal the Deal Split End Mender Lotion
Full ingredient list — Coily Miracle Leave-In (28)
-
1
Water
- solvent
-
2
Propylene Glycol
- humectant
- solvent
-
3
Behentrimonium Chloride
- conditioning agent
- cleanser
-
4
Cetearyl Alcohol
- fatty alcohol
- emollient
- thickener
-
5
Stearyl Alcohol
- fatty alcohol
- emollient
- thickener
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
6
Fragrance
- fragrance
- declared fragrance
-
7
Quaternium-80
- silicone
- conditioning agent
- film former
-
8
Phenoxyethanol
- preservative
-
9
Isopropyl Alcohol
- drying alcohol
- solvent
-
10
Ethylhexylglycerin
- preservative
- emollient
-
11
Panthenol
- humectant
- conditioning agent
- vitamin
-
12
Pisum Sativum (Pea) Peptide
- protein
-
13
Cocos Nucifera (Coconut) Oil
- oil
- emollient
-
14
Silicone Quaternium-22
- silicone
- conditioning agent
- film former
-
15
Ppg-3 Myristyl Ether
- emulsifier
-
16
Hydrolyzed Rice Protein
- film former
- protein
- hydrolysed protein
-
17
Theobroma Cacao (Cocoa) Seed Butter
- butter
- emollient
- sealant
-
18
Butyrospermum Parkii (Shea) Butter
- butter
- emollient
- sealant
-
19
Persea Gratissima (Avocado) Oil
- oil
- emollient
-
20
Gardenia Taitensis Flower Extract
- botanical extract
-
21
Leuconostoc/Radish Root Ferment Filtrate
- preservative
-
22
Benzyl Alcohol
- preservative
- solvent
-
23
Tocopherol
- antioxidant
- vitamin
-
24
Potassium Sorbate
- preservative
-
25
Sodium Benzoate
- preservative
-
26
Citric Acid
- pH adjuster
- hard-water chelator
-
27
Sodium Hydroxide
- pH adjuster
-
28
Anise Alcohol
- fragrance
- named fragrance allergen
Full ingredient list — Healthy Seal the Deal Split End Mender Lotion (57)
-
1
Water
- solvent
-
2
Cyclopentasiloxane
- silicone
- emollient
-
3
Dimethiconol
- silicone
- emollient
-
4
Laureth-4
- emulsifier
-
5
Propylene Glycol
- humectant
- solvent
-
6
Cetearyl Alcohol
- fatty alcohol
- emollient
- thickener
-
7
Stearamidopropyl Dimethylamine
- conditioning agent
-
8
Behentrimonium Chloride
- conditioning agent
- cleanser
-
9
Hydroxyethylcellulose
- gum
- thickener
- film former
-
10
Glycerin
- humectant
-
11
Dimethicone
- silicone
- emollient
- conditioning agent
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
12
Fragrance
- fragrance
- declared fragrance
-
13
Caprylyl Glycol
- preservative
- humectant
-
14
Lactic Acid
- pH adjuster
- humectant
- exfoliant
-
15
Citric Acid
- pH adjuster
- hard-water chelator
-
16
Amodimethicone/Morpholinomethyl Silsesquioxane Copolymer
- conditioning agent
- film former
- polymer
- silicone
-
17
Panthenol
- humectant
- conditioning agent
- vitamin
-
18
Isopropyl Alcohol
- drying alcohol
- solvent
-
19
Trideceth-5
- emulsifier
-
20
Sodium Acetate
- salt
- pH adjuster
-
21
Disodium EDTA
- hard-water chelator
-
22
Hydrolyzed Rice Protein
- film former
- protein
- hydrolysed protein
-
23
Cellulose
- thickener
- gum
-
24
Aloe Barbadensis Leaf Extract
- botanical extract
- humectant
-
25
Mangifera Indica (Mango) Seed Butter
- butter
- emollient
-
26
Hydrolyzed Vegetable Protein PG-Propyl Silanetriol
- film former
- protein
- hydrolysed protein
-
27
Sodium PCA
- humectant
-
28
Sodium Lactate
- humectant
- pH adjuster
-
29
Arginine
- amino acid
- humectant
-
30
Aspartic Acid
- amino acid
- pH adjuster
-
31
Sodium PCA
- humectant
-
32
Avena Sativa (Oat) Peptide
- protein
-
33
Glycine
- amino acid
-
34
Alanine
- amino acid
-
35
Serine
- amino acid
-
36
Valine
- amino acid
-
37
1,2-Hexanediol
- preservative
- humectant
- solvent
-
38
Isoleucine
- amino acid
-
39
Proline
- amino acid
-
40
Threonine
- amino acid
-
41
Histidine
- amino acid
-
42
Phenylalanine
- amino acid
-
43
Phenoxyethanol
- preservative
-
44
Benzoic Acid
- preservative
-
45
Chlorphenesin
- preservative
-
46
Sorbic Acid
- preservative
-
47
Benzyl Alcohol
- preservative
- solvent
-
48
Potassium Sorbate
- preservative
-
49
Sodium Benzoate
- preservative
-
50
Limonene
- fragrance
- named fragrance allergen
-
51
Linalool
- fragrance
- named fragrance allergen
-
52
Coumarin
- fragrance
- named fragrance allergen
-
53
Benzyl Salicylate
- fragrance
- named fragrance allergen
-
54
Citronellol
- fragrance
- named fragrance allergen
-
55
Geraniol
- fragrance
- named fragrance allergen
-
56
Citral
- fragrance
- named fragrance allergen
-
57
Cinnamal
- 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.
Coily Miracle Leave-In
Enhances natural curls
Stated by brandCan’t be confirmed from label.Restores shine
SupportedReflects light for visible shine.Defines curls
SupportedHolds a clump together.Defrizzes and tames flyaways
Stated by brandMay help, but not a primary focus.Creates silkiness
Stated by brandCan’t be confirmed from label.Nourishes hair
SupportedHelps hair feel hydrated.Lightweight formula
Partly supportedDepends how fine your hair is.Helps reduce breakage
Partly supportedSupports the surface, not a treatment.Provides thermal protection
Partly supportedSold for hot tools; untestable here.Instant Detangling
SupportedEasier detangling, less breakage.
Healthy Seal the Deal Split End Mender Lotion
Split End Mender
Stated by brandCan’t be confirmed from label.Instantly seals & mends your tips to reduce the appearance of split ends
Partly supportedSupports the surface, not a treatment.Reduces breakage by +73%
Stated by brandOnly the brand’s testing shows this.Strengthens hair, making it more resistant to breaking
Partly supportedSupports the surface, not a treatment.Hair looks and feels smooth, strong, and moisturized
SupportedHelps hair feel hydrated.Formulated for most hair types (fine, medium, coarse)
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.
Both praised for slip.
Coily Miracle Leave-In
General strong satisfaction ('So glad I found this!'), high 4.6-4.9/5 rating with most reviewers recommending to friends
Protects hair, detangles, and brightens/enhances hair appearance; drives repeat purchase during promotions
Long-time repeat users rely on it for detangling and easier combing of coily hair
Healthy Seal the Deal Split End Mender Lotion
Silky, smooth finish helps reduce frizz after heat styling
Lori and A, Ulta reviewersDetangles curls and improves the appearance of split ends
Brianna and Daysh, Ulta/SalonCentric reviewersStrong fragrance and difficult packaging are complaints
Ulta reviewersPrice 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.
$6.46/oz vs $6.50/oz — within about the same cost per ounce.
Coily Miracle Leave-In
Against 553 leave-ins with a computable unit price.
Healthy Seal the Deal Split End Mender Lotion
Against 553 heat protectants 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.
Coily Miracle Leave-In · Healthy Seal the Deal Split End Mender Lotion · 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.
- 9 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.
Your personalized hair plan
Tell us what’s going on with your hair, see what we understand, and get a plan built around it — with the reason behind every recommendation.
Free to start · $49.00 for your consultation and hair profile · No subscription · Nothing you must buy
Start your consultation