Coco & Eve Hair Repairing Leave-In Treatment Versus K18 Hair Leave-In Molecular Repair Hair Mask
Updated on January 17, 2025
Overview
What they are
These products are both vegan, cruelty-free, and reef safe . They have a total of 9 ingredients in common
Cool Features
They both contain peptides
Suited For
They're both likely to be good for anti aging, dry skin and scar healing
Free From
They both do not contain any oils, parabens, silicones or sulfates
What's Inside
They both contain harsh alcohols, common allergens and fragrances
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Coco & Eve Hair Repairing Leave-In Treatment 30 ingredients
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Coco & Eve Hair Repairing Leave-In Treatment 30 ingredients
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningCetearyl Alcohol
Emollient
Glycerin
Humectant
Sh-Oligopeptide-78
Behenyl/Stearyl Aminopropanediol Esters
Arginine
Masking
Itaconic Acid
AntimicrobialPanthenol
Skin Conditioning
Linum Usitatissimum Seed Extract
Perfuming
Salvia Hispanica Seed Extract
EmollientPolyglyceryl-10 Laurate
Skin Conditioning
Hydrolyzed Hyaluronic Acid
Humectant
Cocos Nucifera Water
Masking
Psidium Guajava Fruit Extract
AstringentSodium Hyaluronate
Humectant
Hydrolyzed Wheat Protein
Skin ConditioningHydrolyzed Wheat Starch
Skin ConditioningGuar Hydroxypropyltrimonium Chloride
Skin ConditioningCaprylic Acid
CleansingSorbic Acid
Preservative
Tetrasodium Glutamate Diacetate
Xylitol
Humectant
Coumarin
Perfuming
Benzoic Acid
Masking
Behentrimonium Chloride
Preservative
Cetrimonium Chloride
Antimicrobial
Benzyl Alcohol
Perfuming
Parfum
Masking
Hexyl Cinnamal
Perfuming
Limonene
Perfuming
Water, Cetearyl Alcohol, Glycerin, Sh-Oligopeptide-78, Behenyl/Stearyl Aminopropanediol Esters, Arginine, Itaconic Acid, Panthenol, Linum Usitatissimum Seed Extract, Salvia Hispanica Seed Extract, Polyglyceryl-10 Laurate, Hydrolyzed Hyaluronic Acid, Cocos Nucifera Water, Psidium Guajava Fruit Extract, Sodium Hyaluronate, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Guar Hydroxypropyltrimonium Chloride, Caprylic Acid, Sorbic Acid, Tetrasodium Glutamate Diacetate, Xylitol, Coumarin, Benzoic Acid, Behentrimonium Chloride, Cetrimonium Chloride, Benzyl Alcohol, Parfum, Hexyl Cinnamal, Limonene
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Propylene Glycol
Humectant
Cetearyl Alcohol
Emollient
Dicaprylyl Ether
Emollient
Cetyl Esters
Emollient
Behentrimonium Chloride
Preservative
Polysorbate 20
Emulsifying
Sh-Oligopeptide-78
Hydrolyzed Wheat Protein
Skin ConditioningHydrolyzed Wheat Starch
Skin ConditioningIsopropyl Alcohol
Solvent
Tocopherol
Antioxidant
Phenoxyethanol
Preservative
Potassium Sorbate
Preservative
Citric Acid
Buffering
Parfum
Masking
Geraniol
Perfuming
Linalool
Perfuming
Hexyl Cinnamal
Perfuming
Benzyl Alcohol
Perfuming
Water, Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, Sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Parfum, Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
This ingredient is a preservative and often used for it's anti-static properties. You'll most likely see this ingredient in hair conditioners.
It does not cause irritation or sensitization in leave-on products at 1-5%.
Benzyl Alcohol is most commonly used as a preservative. It also has a subtle, sweet smell. Small amounts of Benzyl Alcohol is not irritating and safe to use in skincare products. Most Benzyl Alcohol is derived from fruits such as apricots.
Benzyl Alcohol has both antibacterial and antioxidant properties. These properties help lengthen the shelf life of products. Benzyl Alcohol is a solvent and helps dissolve other ingredients. It can also improve the texture and spreadability.
Alcohol comes in many different forms. Different types of alcohol will have different effects on skin. This ingredient is an astringent alcohol.
Using high concentrations of these alcohols are drying on the skin. They may strip away your skin's natural oils and even damage your skin barrier. Astringent alcohols may also irritate skin.
Other types of astringent alcohols include:
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.
Learn more about Benzyl AlcoholCetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.
Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.
This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.
Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.
Learn more about Cetearyl AlcoholHexyl Cinnamal is a fragrance ingredient with a similar scent to jasmine. It can be naturally found in chamomile essential oil.
This ingredient is a known EU allergen and may sensitize the skin. The EU requires this ingredient to be listed separately on an ingredients list.
Hexyl Cinnamal is not water soluble but is soluble in oils.
Learn more about Hexyl CinnamalWe don't have a description for Hydrolyzed Wheat Protein yet.
We don't have a description for Hydrolyzed Wheat Starch yet.
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.
For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.
The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.
For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.
One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.
Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.
Parfum can also be used to mask or cover an unpleasant scent.
The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.
Learn more about ParfumSh-Oligopeptide-78 is a peptide.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Coco & Eve Hair Repairing Leave-In Treatment 30 ingredients
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
Reviews
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