Sesderma Azelac RU Luminous Fluid SPF 50 Versus La Roche-Posay Effaclar Ultra Concentrated Serum
Updated on July 18, 2023
Overview
Cool Features
They both contain exfoliants
Suited For
They're both likely to be good for fighting acne, anti aging, brightening skin, sensitive skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any common allergens, parabens or sulfates
What's Inside
They both contain harsh alcohols and fragrances
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
Sesderma Azelac RU Luminous Fluid SPF 50 56 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Sesderma Azelac RU Luminous Fluid SPF 50 56 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningEthylhexyl Methoxycinnamate
UV Absorber
Butylene Glycol
Humectant
Propylene Glycol
Humectant
Ethylhexyl Triazone
UV Absorber
Ethylhexyl Salicylate
UV Absorber
Cyclopentasiloxane
Emollient
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin Conditioning
Butyl Methoxydibenzoylmethane
UV Absorber
Polymethyl Methacrylate
Bis-PEG-18 Methyl Ether Dimethyl Silane
EmollientBellis Perennis Flower Extract
Skin ConditioningMica
Cosmetic Colorant
Isostearyl Alcohol
Emollient
Titanium Dioxide
Cosmetic Colorant
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingNicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-2
Skin Conditioning
3-O-Ethyl Ascorbic Acid
Skin Conditioning
4-Butylresorcinol
Antioxidant
Alcohol
Antimicrobial
Alcohol Denat.
Antimicrobial
Ascorbyl Palmitate
Antioxidant
Azelaic Acid
Buffering
BHT
Antioxidant
Butylene Glycol Cocoate
Emulsifying
Caprylic/Capric Triglyceride
MaskingCaprylyl Glycol
EmollientCarbomer
Emulsion StabilisingCitric Acid
Buffering
Decyl Glucoside
CleansingDiacetyl Boldine
Skin ConditioningDimethicone
Emollient
Dipotassium Phosphate
BufferingDisodium EDTA
Disodium Phosphate
BufferingEthylcellulose
Ethylhexylglycerin
Skin ConditioningGlycerin
Humectant
Glyceryl Oleate
Emollient
Glyceryl Stearate
Emollient
Hexylene Glycol
EmulsifyingLecithin
EmollientMelissa Officinalis Leaf Extract
Skin ConditioningParfum
Masking
Phenethyl Alcohol
MaskingPhenoxyethanol
Preservative
Polysilicone-11
Polysorbate 20
Emulsifying
Potassium Phosphate
BufferingSilica
Abrasive
Sodium Chloride
Masking
Sodium Cholate
Skin ConditioningSodium Hydroxide
BufferingTocopherol
Antioxidant
Tranexamic Acid
Astringent
Undecylenoyl Phenylalanine
Skin ConditioningWater, Ethylhexyl Methoxycinnamate, Butylene Glycol, Propylene Glycol, Ethylhexyl Triazone, Ethylhexyl Salicylate, Cyclopentasiloxane, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Butyl Methoxydibenzoylmethane, Polymethyl Methacrylate, Bis-PEG-18 Methyl Ether Dimethyl Silane, Bellis Perennis Flower Extract, Mica, Isostearyl Alcohol, Titanium Dioxide, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-2, 3-O-Ethyl Ascorbic Acid, 4-Butylresorcinol, Alcohol, Alcohol Denat., Ascorbyl Palmitate, Azelaic Acid, BHT, Butylene Glycol Cocoate, Caprylic/Capric Triglyceride, Caprylyl Glycol, Carbomer, Citric Acid, Decyl Glucoside, Diacetyl Boldine, Dimethicone, Dipotassium Phosphate, Disodium EDTA, Disodium Phosphate, Ethylcellulose, Ethylhexylglycerin, Glycerin, Glyceryl Oleate, Glyceryl Stearate, Hexylene Glycol, Lecithin, Melissa Officinalis Leaf Extract, Parfum, Phenethyl Alcohol, Phenoxyethanol, Polysilicone-11, Polysorbate 20, Potassium Phosphate, Silica, Sodium Chloride, Sodium Cholate, Sodium Hydroxide, Tocopherol, Tranexamic Acid, Undecylenoyl Phenylalanine
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Propanediol
SolventGlycolic Acid
Buffering
Niacinamide
Smoothing
Dimethyl Isosorbide
SolventPentylene Glycol
Skin ConditioningSalicylic Acid
Masking
Sodium Hydroxide
BufferingPEG-60 Hydrogenated Castor Oil
Emulsifying
Hydroxyethylpiperazine Ethane Sulfonic Acid
BufferingCitric Acid
Buffering
PEG-30 Glyceryl Cocoate
Emulsifying
Capryloyl Salicylic Acid
Exfoliating
Biosaccharide Gum-1
Skin ConditioningMaltodextrin
AbsorbentPhytic Acid
Polyquaternium-10
Parfum
Masking
Water, Alcohol Denat., Propanediol, Glycolic Acid, Niacinamide, Dimethyl Isosorbide, Pentylene Glycol, Salicylic Acid, Sodium Hydroxide, PEG-60 Hydrogenated Castor Oil, Hydroxyethylpiperazine Ethane Sulfonic Acid, Citric Acid, PEG-30 Glyceryl Cocoate, Capryloyl Salicylic Acid, Biosaccharide Gum-1, Maltodextrin, Phytic Acid, Polyquaternium-10, 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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterAlcohol 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.Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
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 even out skin tone.
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.
Read more about some other popular AHA's here:
Learn more about Citric AcidParfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Also called "fragrance", this ingredient 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.
For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.
The term 'parfum' or '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 by INCI standards.
One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.
Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.
Parfum can also be used to mask or cover an unpleasant scent.
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 ParfumSodium 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 HydroxideIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Sesderma Azelac RU Luminous Fluid SPF 50 56 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
Reviews
Here's what our community thinks
Sesderma Azelac RU Luminous Fluid SPF 50 56 ingredients
La Roche-Posay Effaclar Ultra Concentrated Serum 19 ingredients
This product was horrible for me! First I got it recommended by a pharmacist for my face, but back then it was too tingly and I stopped using it. Now because I’ve gotten a bit bacne I would use it there. Apparently I might be allergic, and now I have to throw it out for good! I don’t know who’s face can tolerate this concentrated serum :/
Worth the try for ACNE skin
I used it for about 2 years and I was more than satisfied. Upon returning on my Erasmus trip, it broke me out and made my skin dry. I don't know if anything happened during the trip but right now I don't use it. It's really good if you have taken acne treatment pills and you need smt to keep the acne away (from my experience at least).
