Overview
What they are
These products are both reef safe serums. They have a total of 11 ingredients in common
Cool Features
They both contain hyaluronic acid and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores and scar healing
Free From
They both do not contain any parabens or sulfates
What's Inside
They both contain harsh alcohols, fragrances and silicones
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
Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum 38 ingredients
La Roche-Posay 10% Pure Niacinamide Serum 29 ingredients
At a glance
Click on any of the items below to learn more
Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum 38 ingredients
La Roche-Posay 10% Pure Niacinamide Serum 29 ingredients
Notable Ingredients
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Benefits
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Concerns
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Notable Ingredients
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:
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Benefits
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Concerns
This product contains 1 ingredient that may have this attribute:
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Ingredients Side-by-side
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.
Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
5 Concerns
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.
Hamamelis Virginiana Water is made used distilled parts of the witch hazel plant. The witch hazel plant is native to eastern North America.
Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.
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.
Antioxidant 4 Benefits May cause irritation
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.
Ammonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product.
Preservative 5 Benefits 4 Concerns
Salicylic Acid (also known as beta hydroxy acid or BHA) is one of the most well-known ingredients for treating skin that struggles with blackheads and acne. It helps to exfoliate both the skin's surface and pores, and also acts as an anti-inflammatory agent.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
Not safe for Fungal Acne
Peg-60 Hydrogenated Castor Oil comes from hydrogenated castor oil. It is a solubilizer and emulsifier.
Panax Ginseng Root is a popular herb from Asia. This root contains antioxidants, favonoids, and vitamins B12 and D.
Peg-20 Methyl Glucose Sesquistearate isn't fungal acne safe.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Ocimum Sanctum Leaf Extract comes from the Holy Basil plant. Holy Basil is native to India.
Citrus Aurantium Dulcis Peel Oil is oil from the peel of an orange fruit.
Limonene is a fragrance that adds scent and taste to a formulation.
Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
2 Concerns
Eugenol is naturally found in cloves, basil, and bay leaves. It is an aromatic oil used to add fragrance to a product. The scent of eugenol is described as "clove-like". Eugenol is a known EU allergen, meaning it causes contact allergies.
Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
EU Allergen
Pelargonium Graveolens Flower Oil is the pressed oil of the Rose Geranium plant. It is volatile, meaning it evaporates off the skin.
EU Allergen
Citral is a fragrance and used to add a lemon-like scent to products. It is both naturally found in plants and created synthetically. In plants, it is commonly occurring in lemon myrtle, lemongrass, lemon tea-tree, lemon verbena, and other citruses.
Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
EU Allergen
Lavandula Angustifolia Oil is more commonly known as lavender essential oil. Lavandula Angustifolia is known as the English Lavender and famous for creating purple fields in Provence, France.
EU Allergen
Cymbopogon Schoenanthus Oil is also known as lemongrass oil. It is used as a fragrance in cosmetics.
EU Allergen
Citronellol is used to add fragrance/parfum to a product. It is often derived from plants such as roses. In fact, it can be found in many essential oils including geranium, lavender, neroli, and more. The scent of Citronellol is often described as "fresh, grassy, and citrus-like".
2 Concerns
Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
EU Allergen
Geraniol is used to add fragrance/parfum to a product. It is the main component of citronellol. It is a monoterpenoid and an alcohol.
Rosmarinus Officinalis Leaf Oil is oil expressed from the leaves of the rosemary plant.
Water, Dimethicone, Glycerin, Alcohol Denat., Hamamelis Virginiana Water, Propanediol, Phenoxyethanol, Tocopherol, Ammonium Polyacryloyldimethyl Taurate, Schisandra Chinensis Fruit Extract, Capryloyl Carnosine, Salicylic Acid, Caprylyl Glycol, Xanthan Gum, Peg-60 Hydrogenated Castor Oil, Panax Ginseng Root Extract, Sodium Acetylated Hyaluronate, Peg-20 Methyl Glucose Sesquistearate, Disodium EDTA, Ocimum Sanctum Leaf Extract, Citrus Aurantium Dulcis Peel Oil, Limonene, Adenosine, Sodium Hydroxide, Methyldihydrojasmonate, Citric Acid, Eugenol, Sodium Benzoate, Pelargonium Graveolens Flower Oil, Citral, Potassium Sorbate, Lavandula Angustifolia Oil, Cymbopogon Nardus Oil, Cymbopogon Schoenanthus Oil, Citronellol, Linalool, Geraniol, Rosmarinus Officinalis Leaf Oil
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.
6 Benefits
Niacinamide has emerged as an all-star ingredient due to its many benefits.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
5 Concerns
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.
Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Octyldodecanol is a fatty alcohol. It is primarily used to enhance the texture of products.
Peg-20 Methyl Glucose Sesquistearate isn't fungal acne safe.
Tin Oxide is an inorganic oxide used to add opacity and volume to a product. In nature, it is already found in mineral form. The main ore of tin is an opaque and shiny mineral called casseterite.
Sorbitan Oleate is created from compounds in oleic acid and sorbitol. It is used to stabilize a product by preventing ingredients from separating.
Dimethiconol is a silicone that resembles the popular dimethicone. Like other silicones, it is an emollient. Emollients create a thin film on skin to prevent moisture from escaping.
Cetearyl Ethylhexanoate is derived from cetearyl alcohol and sorbic acid.
Isohexadecane is added to enhance texture, emulsify, and to help cleanse. It is an isoparrafin. It is a component of petrolatum.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Ammonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Isopropyl Myristate is an emollient, thickening agent, and texture enhancer. It is created from isopropyl alcohol and myristic acid.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
Polysorbate 80 is a surfactant and emulsifier. It is used to keep ingredients together, and prevent oils and waters from separating.
Antioxidant 4 Benefits May cause irritation
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.
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.
Mica refers to a group of silicate minerals. Mica crystals are easily split to give products a shimmer. These crystals are able to reflect light to temporarily give your skin a glowy look.
Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.
2 Concerns
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.
Water, Niacinamide, Glycerin, Alcohol Denat., Hydroxyethylpiperazine Ethane Sulfonic Acid, Dimethicone, Isopropyl Lauroyl Sarcosinate, Octyldodecanol, Peg-20 Methyl Glucose Sesquistearate, Tin Oxide, Sorbitan Oleate, Dimethiconol, Cetearyl Ethylhexanoate, Isohexadecane, Sodium Hyaluronate, Phenylethyl Resorcinol, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Isopropyl Myristate, Citric Acid, Xanthan Gum, Polysorbate 80, Acrylamide, Tocopherol, Phenoxyethanol, Mica, CI 77891, Parfum
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 WaterDimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Dimethicone has been found increase absorption in skin, boosting the benefits of other ingredients. While there is concern for the safety of dimethicone, the levels used in skincare are safe for use.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinAlcohol 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.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.
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 TocopherolAmmonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product.
Ammonium Polyacryloyldimethyl Taurate is stable over a wide pH range. Due to its ability to absorb water, it can help thicken the texture of a product.
As an emulsion stabilizer, this ingredient is able to stabilize and mix the other ingredients. This creates a consistent texture.
Learn more about Ammonium Polyacryloyldimethyl TaurateXanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumPeg-20 Methyl Glucose Sesquistearate isn't fungal acne safe.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.
Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.
Learn more about Disodium EDTACitric 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 AcidIngredient Ratings
Here's what our community thinks of the ingredients in these two products.
When to use
Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum 38 ingredients
La Roche-Posay 10% Pure Niacinamide Serum 29 ingredients
Reviews
Here's what our community thinks
Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum 38 ingredients
La Roche-Posay 10% Pure Niacinamide Serum 29 ingredients
AnastasiaW
I applied a small amount to a dark spot. The next day I woke up with an inflamed cystic acne that just appeared out of nowhere. Looking at the...
I applied a small amount to a dark spot. The next day I woke up with an inflamed cystic acne that just appeared out of nowhere. Looking at the ingredients now I am not surprised. Very disappointing, why do they make formulas like this???
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