Rilastil 365 Specifics Acnestil SPF 50+ Versus ISDIN Foto Ultra 100 Spot Prevent Fusion Fluid SPF 50+
Updated on May 26, 2025
Overview
What they are
These products are both sunscreens. They have a total of 7 ingredients in common
Cool Features
They both contain exfoliants, SPF and Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any common allergens, oils, parabens or sulfates
What's Inside
They both contain 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
Rilastil 365 Specifics Acnestil SPF 50+ 43 ingredients
ISDIN Foto Ultra 100 Spot Prevent Fusion Fluid SPF 50+ 32 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Rilastil 365 Specifics Acnestil SPF 50+ 43 ingredients
ISDIN Foto Ultra 100 Spot Prevent Fusion Fluid SPF 50+ 32 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningSilica
Abrasive
Butyl Methoxydibenzoylmethane
UV Absorber
Butyloctyl Salicylate
Skin Conditioning
Diethylhexyl Butamido Triazone
UV Absorber
Ethylhexyl Salicylate
UV Absorber
Ethylhexyl Triazone
UV Absorber
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin Conditioning
Dicaprylyl Carbonate
EmollientDibutyl Adipate
EmollientCeteareth-25
CleansingCeteth-2
EmulsifyingDiethylamino Hydroxybenzoyl Hexyl Benzoate
UV Filter
Potassium Cetyl Phosphate
EmulsifyingIsodecyl Neopentanoate
EmollientPolyester-7
Skin ConditioningGlyceryl Behenate
Emollient
Methylpropanediol
SolventNiacinamide
Smoothing
Potassium Azeloyl Diglycinate
Skin Conditioning
Neopentyl Glycol Diheptanoate
Emollient1,2-Hexanediol
Skin Conditioning
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingXanthan Gum
EmulsifyingDiethylhexyl Syringylidenemalonate
Skin ProtectingBisabolol
Masking
Dipotassium Glycyrrhizate
Humectant
Oryzanol
Skin ConditioningTocopheryl Acetate
Antioxidant
Caprylic/Capric Triglyceride
Masking
Diglycerin
Humectant
Glycerin
Humectant
Pinus Pinaster Bark/Bud Extract
Antimicrobial
Schisandra Chinensis Fruit Extract
Skin ConditioningArtemisia Umbelliformis Extract
Skin ConditioningBuddleja Davidii Leaf Extract
Skin ConditioningPeucedanum Ostruthium Leaf Extract
Skin ConditioningTetrasodium Glutamate Diacetate
Hydroxyacetophenone
Antioxidant
Sodium Hydroxide
BufferingSodium Benzoate
Masking
Potassium Sorbate
Preservative
Parfum
Masking
Water, Silica, Butyl Methoxydibenzoylmethane, Butyloctyl Salicylate, Diethylhexyl Butamido Triazone, Ethylhexyl Salicylate, Ethylhexyl Triazone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Dicaprylyl Carbonate, Dibutyl Adipate, Ceteareth-25, Ceteth-2, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Potassium Cetyl Phosphate, Isodecyl Neopentanoate, Polyester-7, Glyceryl Behenate, Methylpropanediol, Niacinamide, Potassium Azeloyl Diglycinate, Neopentyl Glycol Diheptanoate, 1,2-Hexanediol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Diethylhexyl Syringylidenemalonate, Bisabolol, Dipotassium Glycyrrhizate, Oryzanol, Tocopheryl Acetate, Caprylic/Capric Triglyceride, Diglycerin, Glycerin, Pinus Pinaster Bark/Bud Extract, Schisandra Chinensis Fruit Extract, Artemisia Umbelliformis Extract, Buddleja Davidii Leaf Extract, Peucedanum Ostruthium Leaf Extract, Tetrasodium Glutamate Diacetate, Hydroxyacetophenone, Sodium Hydroxide, Sodium Benzoate, Potassium Sorbate, Parfum
Water
Skin ConditioningDibutyl Adipate
EmollientCyclopentasiloxane
Emollient
Octocrylene
UV Absorber
Alcohol Denat.
Antimicrobial
Titanium Dioxide
Cosmetic Colorant
Butyl Methoxydibenzoylmethane
UV Absorber
Cyclohexasiloxane
Emollient
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
Skin Conditioning
Butylene Glycol
Humectant
PEG-30 Dipolyhydroxystearate
Emulsifying
Nylon-12
PEG-10 Dimethicone
Skin Conditioning
Sodium Chloride
Masking
Phenoxyethanol
Preservative
Silica
Abrasive
Dimethicone
Emollient
Disteardimonium Hectorite
StabilisingPanthenol
Skin Conditioning
Tocopheryl Acetate
Antioxidant
Allantoin
Skin Conditioning
Glyceryl Stearate
Emollient
Parfum
Masking
Disodium EDTA
Ethylhexylglycerin
Skin ConditioningSodium Hyaluronate
Humectant
Dimethiconol
Emollient
PEG-8
HumectantTocopherol
Antioxidant
Ascorbyl Palmitate
Antioxidant
Ascorbic Acid
Antioxidant
Citric Acid
Buffering
Water, Dibutyl Adipate, Cyclopentasiloxane, Octocrylene, Alcohol Denat., Titanium Dioxide, Butyl Methoxydibenzoylmethane, Cyclohexasiloxane, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Butylene Glycol, PEG-30 Dipolyhydroxystearate, Nylon-12, PEG-10 Dimethicone, Sodium Chloride, Phenoxyethanol, Silica, Dimethicone, Disteardimonium Hectorite, Panthenol, Tocopheryl Acetate, Allantoin, Glyceryl Stearate, Parfum, Disodium EDTA, Ethylhexylglycerin, Sodium Hyaluronate, Dimethiconol, PEG-8, Tocopherol, Ascorbyl Palmitate, Ascorbic Acid, 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.
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 TriazineAlso known as Avobenzone, this ingredient is a chemical sunscreen filter that provides protection in the UV-A range.
Avobenzone is globally approved and is the most commonly used UV-A filter in the world.
Studies have found that avobenzone becomes ineffective when exposed to UV light (it is not photostable; meaning that it breaks down in sunlight). Because of this, formulations that include avobenzone will usually contain stabilizers such as octocrylene.
However, some modern formulations (looking at you, EU!) are able to stabilize avobenzone by coating the molecules.
Avobenzone does not protect against the UV-B range, so it's important to check that the sunscreen you're using contains other UV filters that do!
The highest concentration of avobenzone permitted is 3% in the US, and 5% in the EU.
Learn more about Butyl MethoxydibenzoylmethaneDibutyl Adipate is an emollient and solvent. It is created from butyl alcohol and adipic acid.
As a solvent, Dibutyl Adipate helps mix and disperse ingredients evenly.
Dibutyl Adipate is soluble in water and organic solvents. It does not absorb UV rays.
Learn more about Dibutyl AdipateParfum 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 ParfumSilica 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.
Silica is often used for absorption and can help reduce shine when products are applied. Silica occurs in naturally in materials like clay and sandstone, and it can also be produced synthetically.
Silica is present naturally within the skin during collagen production and when reducing inflammation.
Learn more about SilicaTocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.
One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.
Tocopheryl Acetate is commonly found in both skincare and dietary supplements.
Learn more about Tocopheryl AcetateWater. 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 WaterIngredient Ratings
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