Versus

Ducray Melascreen Protective Anti-Spots Fluid SPF 50+ Versus Sesderma Azelac RU Luminous Fluid SPF 50

Sunscreen
Sunscreen
French Brand France
Spanish Brand Spain

Updated on April 09, 2025

Overview

What they are

These products are both sunscreens. They have a total of 8 ingredients in common

Cool Features

They both contain SPF

Suited For

They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, reducing pores, scar healing, dark spots and better texture

Free From

They both do not contain any common allergens, oils, parabens or sulfates

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

Click any item below to learn more and see relevant ingredients

About this product

About this product

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Azelac RU Luminous Fluid SPF 50

Water

Skin Conditioning

Ethylhexyl Methoxycinnamate

UV Absorber
0 / 0 Chemical UV Filter IconMay cause irritation IconNon-Reef-Safe Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Propylene Glycol

Humectant
0 / 0 Helps hydrate Dry Skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Ethylhexyl Triazone

UV Absorber
Chemical UV Filter Icon

Ethylhexyl Salicylate

UV Absorber
0 / 0 Chemical UV Filter IconNon-Reef-Safe IconMay worsen Rosacea Icon

Cyclopentasiloxane

Emollient
Silicon Icon

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine

Skin Conditioning
Chemical UV Filter Icon

Butyl Methoxydibenzoylmethane

UV Absorber
Chemical UV Filter IconMay cause irritation IconMay worsen Rosacea Icon

Polymethyl Methacrylate

Bis-PEG-18 Methyl Ether Dimethyl Silane

Emollient

Bellis Perennis Flower Extract

Skin Conditioning

Mica

Cosmetic Colorant
May worsen Eczema Icon

Isostearyl Alcohol

Emollient
Fatty Alcohol Icon

Titanium Dioxide

Cosmetic Colorant
0 / 0 Mineral UV Filter IconNon-Reef-Safe Icon

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-2

Skin Conditioning
Peptide Icon

3-O-Ethyl Ascorbic Acid

Skin Conditioning
Vitamin C IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores Icon

4-Butylresorcinol

Antioxidant
Antioxidant Icon

Alcohol

Antimicrobial
Alcohol IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon

Alcohol Denat.

Antimicrobial
Alcohol IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon

Ascorbyl Palmitate

Antioxidant
2 / 0 Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin IconNot safe for Fungal Acne Icon

Azelaic Acid

Buffering
Helps reduce Skin Redness IconHelps reduce irritation IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne Icon

BHT

Antioxidant
Antioxidant Icon

Butylene Glycol Cocoate

Emulsifying
Can worsen Dry Skin IconNot safe for Fungal Acne Icon

Caprylic/Capric Triglyceride

Masking

Caprylyl Glycol

Emollient

Carbomer

Emulsion Stabilising
1 / 0

Citric Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Decyl Glucoside

Cleansing

Diacetyl Boldine

Skin Conditioning

Dimethicone

Emollient
1 / 0 Silicon Icon

Dipotassium Phosphate

Buffering

Disodium EDTA

Disodium Phosphate

Buffering

Ethylcellulose

Ethylhexylglycerin

Skin Conditioning

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Glyceryl Oleate

Emollient
Fragrance IconNot safe for Fungal Acne Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Hexylene Glycol

Emulsifying
0-2 / 0-1

Lecithin

Emollient

Melissa Officinalis Leaf Extract

Skin Conditioning

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Phenethyl Alcohol

Masking

Phenoxyethanol

Preservative
Preservative Icon

Polysilicone-11

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Potassium Phosphate

Buffering

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

Sodium Chloride

Masking
Can worsen Dry Skin IconBad for Acne Prone Skin IconMay worsen Rosacea Icon

Sodium Cholate

Skin Conditioning

Sodium Hydroxide

Buffering

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Tranexamic Acid

Astringent
Good for Dark Spots IconGood for Scar Healing Icon

Undecylenoyl Phenylalanine

Skin Conditioning

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent

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 Water
UV Absorber, UV Filter

Ethylhexyl Triazone is a modern chemical sunscreen that protects from UV-B radiation.

It is the most effective of existing UV-B filters, as it provides the highest level of photo-stable absorption. It protects from the entire UV-B range (280 to 320nm), with it's highest level of protection at 314nm.

Ethylhexyl Triazone is oil soluble, oderless and colorless, which mean it is able to be incorporated into a variety of different formulations.

It is not currently available within the United States due to slow changing FDA regulations. Outside of the US, it is used in formulations at concentrations up to 5%.

Learn more about Ethylhexyl Triazone
Humectant, Skin Conditioning, Skin Protecting

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 Glycerin
Skin Conditioning, UV Absorber, UV Filter

You 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 Triazine
Emollient, Emulsifying

Glyceryl Stearate is a mix of glycerin and stearic acid.

It is used to stabilize the mixing of water and oil ingredients. By preventing these ingredients from separating, it can help elongate shelf life. It can also help thicken the product's texture.

As an emollient, it helps soften skin and supports barrier-replenishing ingredients.

In cosmetics, Glyceryl Stearate is often made from vegetable oils or synthetically produced.

This ingredient may not be fungal-acne safe

Fun fact: The human body also creates Glyceryl Stearate naturally.

Learn more about Glyceryl Stearate
Buffering, Masking

Azelaic acid is a naturally occurring acid derived from grains. This ingredient is effective in treating acne, rosacea, and other skin conditions.

It has been shown to reduce the growth of acne-causing bacteria and helps reduce inflammation. On top of that, it helps reduce the production of sebum and unclog pores.

Azelaic Acid also has antioxidant properties. Antioxidants protect our skin cells from free-radical damage.

One of the main benefits of azelaic acid is that it is gentle and well-tolerated by most people.

Fun fact: The lab-created form of azelaic acid is typically used within cosmetic products for its shelf-stability.

Learn more about Azelaic Acid
Emollient, Humectant, Skin Conditioning

Caprylyl 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 Glycol
Buffering

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.

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 Hydroxide

When to use

1 Routine
100% use in am
0% use in pm
100% use every day