La Roche-Posay EFFACLAR K+ Versus Neutrogena Hydro Boost Water Gel - US
Updated on October 29, 2023
Overview
What they are
These products are both reef safe general moisturizers. They have a total of 4 ingredients in common
Suited For
They're both likely to be good for dry skin, brightening skin, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, common allergens, oils, parabens or sulfates
What's Inside
They both contain 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
La Roche-Posay EFFACLAR K+ 24 ingredients
Neutrogena Hydro Boost Water Gel 34 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
La Roche-Posay EFFACLAR K+ 24 ingredients
Neutrogena Hydro Boost Water Gel 34 ingredients
Key Ingredients
Benefits
Concerns
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropylene Glycol
Humectant
Octyldodecanol
EmollientDimethicone
Emollient
PEG-100 Stearate
Glyceryl Stearate
Emollient
Salicylic Acid
Masking
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingZinc PCA
Humectant
Sarcosine
Skin ConditioningSodium Hydroxide
BufferingSilica
Abrasive
Silica Silylate
EmollientPerlite
AbsorbentCarnosine
Skin Conditioning
Disodium EDTA
Capryloyl Salicylic Acid
Exfoliating
Xanthan Gum
EmulsifyingPentylene Glycol
Skin ConditioningAcrylates Copolymer
Cetyl Alcohol
Emollient
Butylene Glycol
Humectant
Tocopherol
Antioxidant
Parfum
Masking
Water, Propylene Glycol, Octyldodecanol, Dimethicone, PEG-100 Stearate, Glyceryl Stearate, Salicylic Acid, Ammonium Polyacryloyldimethyl Taurate, Zinc PCA, Sarcosine, Sodium Hydroxide, Silica, Silica Silylate, Perlite, Carnosine, Disodium EDTA, Capryloyl Salicylic Acid, Xanthan Gum, Pentylene Glycol, Acrylates Copolymer, Cetyl Alcohol, Butylene Glycol, Tocopherol, Parfum
Water
Skin ConditioningGlycerin
Humectant
Dimethicone
Emollient
Cetearyl Olivate
Sorbitan Olivate
Emulsifying
Sodium Hyaluronate
Humectant
Serine
Masking
Glycine
Buffering
Alanine
MaskingThreonine
Arginine
Masking
Proline
Skin ConditioningLysine Hcl
Skin Conditioning
Glutamic Acid
Humectant
Sodium PCA
Humectant
PCA
Humectant
Sodium Lactate
BufferingUrea
Buffering
Sodium Chloride
Masking
Citric Acid
Buffering
Betaine
Humectant
Allantoin
Skin Conditioning
Fructose
Humectant
Maltose
MaskingTrehalose
Humectant
Glucose
Humectant
Pentylene Glycol
Skin ConditioningSynthetic Beeswax
Emulsion Stabilising
Polyacrylate Crosspolymer-6
Emulsion StabilisingDimethicone Crosspolymer
Emulsion StabilisingDimethiconol
Emollient
Ethylhexylglycerin
Skin ConditioningCaprylyl Glycol
EmollientSodium Hydroxide
BufferingWater, Glycerin, Dimethicone, Cetearyl Olivate, Sorbitan Olivate, Sodium Hyaluronate, Serine, Glycine, Alanine, Threonine, Arginine, Proline, Lysine Hcl, Glutamic Acid, Sodium PCA, PCA, Sodium Lactate, Urea, Sodium Chloride, Citric Acid, Betaine, Allantoin, Fructose, Maltose, Trehalose, Glucose, Pentylene Glycol, Synthetic Beeswax, Polyacrylate Crosspolymer-6, Dimethicone Crosspolymer, Dimethiconol, Ethylhexylglycerin, Caprylyl Glycol, Sodium Hydroxide
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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterDimethicone is a type of synthetic silicone created from natural materials such as quartz.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
Learn more about DimethiconeSodium 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.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
Learn more about Sodium HydroxidePentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene GlycolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
La Roche-Posay EFFACLAR K+ 24 ingredients
Neutrogena Hydro Boost Water Gel 34 ingredients
Reviews
Here's what our community thinks
La Roche-Posay EFFACLAR K+ 24 ingredients
i dont see a change on my skin. it is still oily with black spots. I use this product since a year ago but Im dissapointed.
Neutrogena Hydro Boost Water Gel 34 ingredients
Burnssssss
Broke me out, made me really really itchy
I got this because it was one of the products I used two years ago that moisturized my skin without making me oily. However, they came out with a new formula earlier this year. I decided to try it anyways and right off the bat I could tell it was different. The old formula was unscented. I'm sensitive to scents, and the new one smells like strong herbal shampoo. I put it on and it stung a little. Show more
