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La Roche-Posay Effaclar Duo [+] SPF 30 Versus Kiehl's Ultra Light Daily UV Defense Aqua Gel SPF 50
Overview
Cool Features
They both contain SPF
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin and scar healing
Free From
They both do not contain any common allergens, oils, parabens or sulfates
What's Inside
They both contain harsh alcohols 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
La Roche-Posay Effaclar Duo [+] SPF 30 33 ingredients
Kiehl's Ultra Light Daily UV Defense Aqua Gel SPF 50 40 ingredients
At a glance
Click on any of the items below to learn more
La Roche-Posay Effaclar Duo [+] SPF 30 33 ingredients
Kiehl's Ultra Light Daily UV Defense Aqua Gel SPF 50 40 ingredients
Notable Ingredients
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Benefits
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Concerns
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Notable Ingredients
This product contains 4 ingredients that may have this attribute:
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Benefits
This product contains 2 ingredients that may have this attribute:
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Concerns
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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.
2 Concerns
Octocrylene protects skin from sun damage. It absorbs UV-B with peak absorption of 304 nm. It is a common sunscreen ingredient and often paired with avobenzone, a UVA filter. This is because octocrylene stabilizes other sunscreen ingredients by protecting them from degradation when exposed to sunlight. Octocrylene is a photostable ingredient and loses about 10% of SPF in 95 minutes.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Non-Reef-Safe
Homosalate is a chemical sunscreen filter that provides protection in the UV-B range (280nm - 320 nm), with a peak protection at 306 nm. It is internationally approved for use in sunscreens.
2 Concerns
Ethylhexyl Salicylate is an organic compound used to block UV rays. It primarily absorbs UVB rays but offers a small amount of UVA protection as well.
5 Concerns
Alcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol with other additives.
2 Concerns
Also known as Avobenzone, this ingredient is a chemical sunscreen filter that provides protection in the UV-A range.
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.
Sorbitan Stearate comes from sorbitol and stearic acid. Sorbitol is a type of sugar and stearic acid is a fatty acid.
2 Concerns
Silica is a mineral naturally found in our skin. It helps to thicken and smooth the texture of a product. It also acts as an agent for other ingredients by increasing the absorption of other ingredients into the skin.
Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Potassium Cetyl Phosphate is the potassium salt of a mixture. This mixture consists of the esters from phosphoricacid and cetyl alcohol.
Zinc PCA (or "zinc salt") differs slightly from zinc itself. PCA stands for pyrrolidone carboxylic acid. However, Zinc PCA comes from zinc.
Dimethicone/Vinyl Dimethicone Crosspolymer is a silicone used to improve the texture of products and absorb oil. It does not get absorbed into the skin.
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.
Sucrose Cocoate is created from the sucrose esters of coconut acid. Coconut acid is comprised of the fatty acids of coconut oil.
Capryloyl Salicylic Acid comes from salicylic acid, the famous acne-fighting BHA.
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.
Fragrance
T-Butyl Alcohol it is most commonly used as a solvent.
This BHA stands for butylated hydroxyanisole. If you are looking for the beta-hydroxy acid, aka as Salicylic Acid, click here.
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.
2 Concerns
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Water, Octocrylene, Glycerin, Homosalate, Ethylhexyl Salicylate, Alcohol Denat., Butyl Methoxydibenzoylmethane, Dimethicone, Sorbitan Stearate, Silica, Isopropyl Lauroyl Sarcosinate, Styrene/Acrylates Copolymer, Propylene Glycol, Potassium Cetyl Phosphate, Diisopropyl Sebacate, Peg-20, Peg-8 Laurate, Zinc PCA, Dimethicone/Vinyl Dimethicone Crosspolymer, Oleamide, Ceramide 1 A, Inulin Lauryl Carbamate, Carnosine, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Sucrose Cocoate, Capryloyl Salicylic Acid, Xanthan Gum, T-Butyl Alcohol, BHA, Salicylic Acid, Parfum
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.
5 Concerns
Alcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol with other additives.
Ethylhexyl Triazone is a modern chemical sunscreen that protects from UV-B radiation.
Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
You might know this ingredient as Tinosorb S or Bemotrizinol. It is a UV filter that covers both UVA and UVB rays.
Diethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB) is a chemical UVA absorber. It is formulated for high UVA protection (320-400 nm).
Non-Reef-Safe
Titanium dioxide is known for its UVA and UVB protection properties. It is non-comedogenic and non-irritating. Titanium Dioxide is a physical sunscreen. Physical sunscreens reflect light and prevent it from reaching your skin.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Silicon
Drometrizole Trisiloxane is a UV filter that provides both UV-A (344 nm) and UV-B (303 nm) protection.
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.
Stearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.
Phenoxyethanol 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.
Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.
Palmitic Acid is a fatty acid found in our skin. In cosmetics, it is usually derived from palm oil. It is a cleanser, emollient, and emulsifier.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
Dextrin Palmitate comes from the palmitic acid ester of Dextrin. It is used as an emulsifier and texture enhancer.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken and improve the texture of products.
Aluminum Hydroxide is a form of aluminum. It can be naturally found in nature as the mineral gibbsite. In cosmetics, Aluminum Hydroxide is used as a colorant, pH adjuster, and absorbent.
Ammonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Potassium hydroxide is commonly known as caustic potash. It is used to fix the pH of a product or as a cleaning agent in soap. In cleansers, it is used for the saponification of oils.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Myristic Acid is a saturated fatty acid. It is naturally found in milk fat. Other sources include palm oil, coconut oil, and butter fat.
Pentylene 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.
Butyrospermum Parkii Seedcake Extract isn't fungal acne safe.
Sorbitol is a sugar alcohol. It is a hydrating and moisturizing agent created from the reduction process of glucose.
Moringa Oleifera Seed Extract comes from the seeds of the Moringa oleifera plant.
4 Benefits 2 Concerns
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
Water, Alcohol Denat., Diisopropyl Sebacate, Isopropyl Lauroyl Sarcosinate, Ethylhexyl Triazone, Propylene Glycol, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Titanium Dioxide, Glycerin, Methyl Methacrylate Crosspolymer, Drometrizole Trisiloxane, Tocopherol, Stearic Acid, Phenoxyethanol, Cetyl Alcohol, Palmitic Acid, Styrene/Acrylates Copolymer, Ceteth-10, Caprylyl Glycol, Menthoxypropanediol, Dextrin Palmitate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Aluminum Hydroxide, Ammonium Polyacryloyldimethyl Taurate, Butylene Glycol, Potassium Hydroxide, Peg-8 Laurate, Disodium EDTA, Adenosine, Myristic Acid, Gentiana Lutea Root Extract, Pentylene Glycol, Mentha Piperita Extract, Butyrospermum Parkii Seedcake Extract, Rosa Gallica Flower Extract, Sorbitol, Moringa Oleifera Seed Extract, Disodium Phosphate, Citric Acid
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 WaterGlycerin 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 with other additives.
This ingredient gets a bad rep because it is irritating and drying - mostly due to its astringent property. Astringents draw out natural oils in tissue, constricting pores and leaving your skin dried out.
However, alcohol denat. is not all that bad.
Due to its low molecular weight, alcohol denat. tends to evaporate quickly. One study on pig skin found half of applied alcohol evaporated in 10 seconds and less than 3% stayed on skin.
This also helps other ingredients become better absorbed upon application.
Studies are conflicted about whether this ingredient causes skin dehydration. One study from 2005 found adding emollients to propanol-based sanitizer decreased skin dryness and irritation. Another study found irritation only occurs if your skin is already damaged.
Small amounts of alcohol are generally tolerated by oily skin or people who live in humid environments.
The rule of thumb is if this alcohol is near the end of an ingredients list, it will probably not affect your skin much.
Also...
This ingredient has antimicrobial and solvent properties.
The antimicrobial property helps preserve products and increase their shelf life. As a solvent, it helps dissolve other ingredients.
Other types of astringent alcohols include:
Learn more about Alcohol Denat.We don't have a description for Isopropyl Lauroyl Sarcosinate.
We don't have a description for Styrene/Acrylates Copolymer.
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 GlycolWe don't have a description for Diisopropyl Sebacate.
Peg-8 Laurate isn't fungal acne safe.
Ammonium 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 TaurateDisodium 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 EDTAIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
La Roche-Posay Effaclar Duo [+] SPF 30 33 ingredients
Kiehl's Ultra Light Daily UV Defense Aqua Gel SPF 50 40 ingredients
Reviews
Here's what our community thinks
La Roche-Posay Effaclar Duo [+] SPF 30 33 ingredients
Anti
Great product but not great moisturizer
I used this product for a month. It has done great job for my acne prone skin and caused no break outs....
Great product but not great moisturizer
I used this product for a month. It has done great job for my acne prone skin and caused no break outs. However, it is not a great moisturizer itself. I mostly used it before my actuall moisturizer. Plus, it has spf.
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