Here's our complete breakdown comparing the ingredients, attributes, and more of K18 Hair Leave-In Molecular Repair Hair Mask versus L'Oreal Elvive Bond Repair Serum .
Published on November 16, 2023
Overview
What they are
These products are both reef safe . They have a total of 10 ingredients in common
Suited For
They're both likely to be good for dry skin, brightening 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 need an update? Let us know.
Hair Mask
Hair masks provide intense nourishment to your hair and usually need to be washed out. They can be used to treat specific hair conditions.
Hair Serum
Liquid-based hair treatment to help nourish the hair.
Price
Ingredient Info
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oreal Elvive Bond Repair Serum 29 ingredients
Contains Alcohol
Ingredients in this product that are types of alcohol:
Silicon Free
This product is free of silicons 🎉
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
Contains EU Allergens
Ingredients in this product that are EU allergens:
Vegan
This product is vegan 🎉
Cruelty Free
This product is cruelty-free 🎉
Contains Alcohol
Ingredients in this product that are types of alcohol:
Contains Silicon
Ingredients in this product that are types of silicon:
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
Contains EU Allergens
Ingredients in this product that are EU allergens:
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oreal Elvive Bond Repair Serum 29 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Concerns
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
This product contains 5 ingredients that may have this attribute:
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Concerns
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oreal Elvive Bond Repair Serum 29 ingredients
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
Isododecane • Dipropylene Glycol • Water • Dimethicone • Alcohol Denat. • Glycerin • Dimethiconol • Peg-14 Dimethicone • Hydroxyethyl Urea • Parfum • Citric Acid • Sodium Citrate • Hydroxycitronellal • Phenoxyethanol • Peg-60 Hydrogenated Castor Oil • Polyacrylamide • Limonene • Linalool • Benzyl Benzoate • Benzyl Alcohol • Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate • Propylene Glycol • Isoeugenol • Geraniol • Citronellol • Citral • Laureth-7 • Hexyl Cinnamal • C13-14 Alkane
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 1.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 3.
Alcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol and other additives. It has a low molecular weight and will evaporate quickly. This helps other ingredients become better absorbed and dry once applied.
Alcohol Denat. is volatile and may cause irritation. It helps draw out natural oils in skin and dry out your skin.
One study from 2005 found adding emollients to propanol-based sanitizer decreased irritation.
Alcohol is antibacterial by nature. This can help preserve products and increase their shelf life.
Other types of astringent alcohols include:
Learn more about Alcohol Denat.K18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 2.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 5.
Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.
This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.
Those with sensitive skin or conditions may deliver a rash when using this ingredient.
Learn more about Propylene GlycolK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 3.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 22.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and 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.
K18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 14.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 14.
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and look more even.
Read more about some other popular AHA's here:
Learn more about Citric AcidK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 16.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 11.
Parfum is a catch-all term for an ingredient or more that is used to give aroma to products. Parfum, or fragrance, 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.
In the US, the alternative name for parfum is 'fragrance'. The term '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. One example is Calendula flower extract. Essential oil ingredients still impart a scent or 'fragrance'.
Depending on the blend, it can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.
Products use parfum often to give products a scent or cover up smells of different ingredients.
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 ParfumK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 17.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 10.
Geraniol 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 GeraniolK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 18.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 24.
Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
Linalool has the same effect as Limonene when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.
Linalool has a scent that is floral, spicy tropical, and citrus-like.
Learn more about LinaloolK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 19.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 18.
Hexyl 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 CinnamalK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 20.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 28.
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 AlcoholK18 Hair Leave-In Molecular Repair Hair Mask contains this as ingredient number 21.
L'Oreal Elvive Bond Repair Serum contains this as ingredient number 20.
Here's what our community thinks of the ingredients in these two products.
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oreal Elvive Bond Repair Serum 29 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oreal Elvive Bond Repair Serum 29 ingredients
Reviews
Here's what our community thinks
K18 Hair Leave-In Molecular Repair Hair Mask 21 ingredients
L'Oreal Elvive Bond Repair Serum 29 ingredients
Alternatives
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