BIOTHERM Waterlover Sun Milk SPF 50+ Versus La Roche-Posay Anthelios Ultra Fluid Face Lotion SPF 50+
Updated on March 29, 2025
Overview
What they are
These products are both sunscreens. They have a total of 10 ingredients in common
Cool Features
They both contain SPF and Vitamin E
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
BIOTHERM Waterlover Sun Milk SPF 50+ 24 ingredients
La Roche-Posay Anthelios Ultra Fluid Face Lotion SPF 50+ 23 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
BIOTHERM Waterlover Sun Milk SPF 50+ 24 ingredients
La Roche-Posay Anthelios Ultra Fluid Face Lotion SPF 50+ 23 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningIsopropyl Myristate
Emollient
Alcohol Denat.
Antimicrobial
Dicaprylyl Ether
EmollientC12-15 Alkyl Benzoate
AntimicrobialPropanediol
SolventDiethylamino Hydroxybenzoyl Hexyl Benzoate
UV Filter
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin Conditioning
Glycerin
Humectant
Phenylbenzimidazole Sulfonic Acid
UV Absorber
Ethylhexyl Triazone
UV Absorber
Arginine
Masking
Zea Mays Starch
AbsorbentCopernicia Cerifera Cera
Emollient
Parfum
Masking
Drometrizole Trisiloxane
UV Absorber
Behenyl Alcohol
Emollient
Sodium Stearoyl Glutamate
CleansingAmmonium Acryloyldimethyltaurate/Vp Copolymer
Caprylyl Glycol
EmollientDextrin Palmitate
Emulsifying
Xanthan Gum
EmulsifyingTocopherol
Antioxidant
Vitreoscilla Ferment
Skin ConditioningWater, Isopropyl Myristate, Alcohol Denat., Dicaprylyl Ether, C12-15 Alkyl Benzoate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Glycerin, Phenylbenzimidazole Sulfonic Acid, Ethylhexyl Triazone, Arginine, Zea Mays Starch, Copernicia Cerifera Cera, Parfum, Drometrizole Trisiloxane, Behenyl Alcohol, Sodium Stearoyl Glutamate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Caprylyl Glycol, Dextrin Palmitate, Xanthan Gum, Tocopherol, Vitreoscilla Ferment
Drometrizole Trisiloxane 7%
UV Absorber
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 5%
Skin Conditioning
Ethylhexyl Salicylate 5%
UV Absorber
Octocrylene 5%
UV Absorber
Butyl Methoxydibenzoylmethane 3%
UV Absorber
Homosalate 2%
Skin Conditioning
Phenylbenzimidazole Sulfonic Acid 0.5%
UV Absorber
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Silica
Abrasive
Isopropyl Myristate
Emollient
Glycerin
Humectant
Diisopropyl Sebacate
EmollientC12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer
StabilisingPropanediol
SolventPerlite
AbsorbentTocopherol
Antioxidant
Triethanolamine
BufferingCaprylyl Glycol
EmollientTrisodium Ethylenediamine Disuccinate
Disodium EDTA
Hydroxyethylcellulose
Emulsion StabilisingAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingDrometrizole Trisiloxane 7%, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 5%, Ethylhexyl Salicylate 5%, Octocrylene 5%, Butyl Methoxydibenzoylmethane 3%, Homosalate 2%, Phenylbenzimidazole Sulfonic Acid 0.5%, Water, Alcohol Denat., Silica, Isopropyl Myristate, Glycerin, Diisopropyl Sebacate, C12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer, Propanediol, Perlite, Tocopherol, Triethanolamine, Caprylyl Glycol, Trisodium Ethylenediamine Disuccinate, Disodium EDTA, Hydroxyethylcellulose, Acrylates/C10-30 Alkyl Acrylate Crosspolymer
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 WaterIsopropyl Myristate is an emollient, thickening agent, and texture enhancer. It is created from isopropyl alcohol and myristic acid.
It is used to help other ingredients be better absorbed. It is also an emollient and may help soften and hydrate the skin.
The comedogenic rating of this ingredient depends on the concentration. Lower amounts results in a lower rating.
Isopropyl Myristate may not be fungal acne safe. It can potentially worsen acne prone skin.
Learn more about Isopropyl MyristateAlcohol 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.Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolYou might know this ingredient as Tinosorb S or Bemotrizinol. It is a UV filter that covers both UVA and UVB rays.
This ingredient has two peak UV absorption peaks ( 310 and 340 nm) and is able to absorb both UV-A and UV-B rays. This ingredient works by preventing UV rays from reaching and damaging your skin.
On top of that - it is highly photostable and helps prevent the photodegration of other sunscreen ingredients such as avobenzone.
Tinosorb S is allowed in the EU, Australia, and Asia. It is close to being approved by the FDA and we'll hopefully get this ingredient in the U.S. by late 2025.
Fun fact: Tinosorb S is the most effective UV absorber at maximum concentration (measured by SPF) permitted in the EU.
This ingredient is oil-soluble, so your oil-cleansers will take this right off at night.
Learn more about Bis-Ethylhexyloxyphenol Methoxyphenyl TriazineGlycerin 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 GlycerinThis ingredient is more commonly known as Ensulizole, a chemical sunscreen ingredient.
Ensulizole mainly protects UV-B (290-340 nm) but offers a little UV-A (320-400 nm) protection. It is often paired with less photo-stable sunscreen ingredients due to its photo-stability.
Due to it being water-soluble, Ensulizole helps give sunscreens a light and non-oily texture.
Ensulizole is approved worldwide:
Learn more about Phenylbenzimidazole Sulfonic AcidDrometrizole Trisiloxane is a UV filter that provides both UV-A (344 nm) and UV-B (303 nm) protection.
This ingredient is photostable and studies show it to be generally safe and effective. The compound Meroxyl XL is owned by L'Oreal while Drometrizole trisiloxane can be found in other sunscreen brands.
It is currently approved for use in the EU, Canada, Australia, and Japan. However, it is not yet approved for use in the US.
This ingredient is often used with other sunscreen ingredients, such as Ecamsule.
Learn more about Drometrizole TrisiloxaneCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolTocopherol (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 TocopherolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
BIOTHERM Waterlover Sun Milk SPF 50+ 24 ingredients
La Roche-Posay Anthelios Ultra Fluid Face Lotion SPF 50+ 23 ingredients
Reviews
Here's what our community thinks
BIOTHERM Waterlover Sun Milk SPF 50+ 24 ingredients
La Roche-Posay Anthelios Ultra Fluid Face Lotion SPF 50+ 23 ingredients
Feels great
Feels great and leaves no white cast, lasts several weeks as well.
Makes my face feel very greasy!
I'm really not a fan of this sunscreen because it makes my skin feel very oily and greasy. I have normal to dry skin and I rarely feel oily, but with this I have to apply setting powder and even then I usually end up feeling oily for hours. I also find that the sunscreen doesn't go on very smooth and sometimes pills even when I wait for other products to be totally Show more
