K18 Hair Leave-In Molecular Repair Hair Mask Versus L'Oréal Professionnel Absolut Repair 10-In-1 Hair Oil for Damaged Hair
Updated on April 18, 2025
Overview
What they are
These products are both reef safe . They have a total of 9 ingredients in common
Cool Features
They both contain Vitamin E
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 parabens 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
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oréal Professionnel Absolut Repair 10-In-1 Hair Oil for Damaged Hair 33 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
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oréal Professionnel Absolut Repair 10-In-1 Hair Oil for Damaged Hair 33 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
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
Water
Skin ConditioningCera Alba
Emollient
Dimethicone
Emollient
Isopropyl Myristate
Emollient
Phenoxyethanol
Preservative
Hydroxypropyl Guar
Emulsion StabilisingPEG-40 Hydrogenated Castor Oil
Emulsifying
Triethanolamine
BufferingHydroxyethylcellulose
Emulsion StabilisingCaprylyl Glycol
EmollientDimethiconol
Emollient
PEG-30 Glyceryl Stearate
Emulsifying
Hydrogenated Styrene/Butadiene Copolymer
Ethylhexylglycerin
Skin ConditioningAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingHexyl Cinnamal
Perfuming
Linalool
Perfuming
Disodium Stearoyl Glutamate
CleansingCitronellol
Perfuming
Geraniol
Perfuming
Benzyl Alcohol
Perfuming
Limonene
Perfuming
Hydroxycitronellal
Perfuming
Benzyl Salicylate
Perfuming
Alpha-Isomethyl Ionone
Perfuming
PEG-30 Dipolyhydroxystearate
Emulsifying
Trideceth-6
EmulsifyingHydrolyzed Wheat Protein
Skin ConditioningCitral
Perfuming
Hydrolyzed Corn Protein
Skin ConditioningHydrolyzed Soy Protein
Humectant
Tocopherol
Antioxidant
Parfum
Masking
Water, Cera Alba, Dimethicone, Isopropyl Myristate, Phenoxyethanol, Hydroxypropyl Guar, PEG-40 Hydrogenated Castor Oil, Triethanolamine, Hydroxyethylcellulose, Caprylyl Glycol, Dimethiconol, PEG-30 Glyceryl Stearate, Hydrogenated Styrene/Butadiene Copolymer, Ethylhexylglycerin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Hexyl Cinnamal, Linalool, Disodium Stearoyl Glutamate, Citronellol, Geraniol, Benzyl Alcohol, Limonene, Hydroxycitronellal, Benzyl Salicylate, Alpha-Isomethyl Ionone, PEG-30 Dipolyhydroxystearate, Trideceth-6, Hydrolyzed Wheat Protein, Citral, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Tocopherol, Parfum
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 AlcoholGeraniol is used to add fragrance/parfum to a product. It is the main component of citronellol. It is a monoterpenoid and an alcohol.
Monoterpenes are naturally found in many parts of different plants.
Geraniol can be found in many essential oils including Rose Oil and Citronella Oil. The scent of Geraniol is often described as "rose-like". Many foods also contain Geraniol for fruit flavoring.
Geraniol can irritate the skin when exposed to air. However, irritation depends on the ability of geraniol to penetrate into the skin. In general, geraniol is not able to penetrate skin easily.
Geraniol is colorless and has low water-solubility. However, it is soluble in common organic solvents.
Like citronellol, it is a natural insect repellent.
2,6-Octadien-1-ol, 3,7-dimethyl-, (2E)-
Learn more about GeraniolHexyl 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.
Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.
This ingredient has a scent that is floral, spicy tropical, and citrus-like.
Learn more about LinaloolParfum 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 ParfumPhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolWater. 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
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oréal Professionnel Absolut Repair 10-In-1 Hair Oil for Damaged Hair 33 ingredients
Reviews
Here's what our community thinks
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
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