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Rilastil Sun System Water Touch Fluid SPF 50+ Ingredients Explained

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Updated on February 25, 2024 Submitted by Anna_400

Overview

What it is

Sunscreen with 36 ingredients that contains exfoliants, hyaluronic acid, SPF and Vitamin E

Cool Features

It is fungal acne (malassezia) safe

Suited For

It has ingredients that are good for dry skin, brightening skin, sensitive skin and scar healing

Free From

It doesn't contain any harsh alcohols, common allergens, oils, parabens, silicones or sulfates

Fun facts

Rilastil is from Italy. This product is used in 3 routines created by our community.

We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.

You should know

Here's our breakdown of the notable ingredients, benefits, and concerns we determined from the ingredients in this product. Click any item to learn more.

Notable Ingredients

Chemical UV Filter (4)
Vitamin E
Exfoliators
Hyaluronic Acid

Benefits

Hydrating
Redness Reducing
Reduces Irritation
Scar Healing
Brightening (2)

Concerns

Irritating
Rosacea (4)
Eczema (2)

Ingredient Info

Click any item below to learn more and view relevant ingredients.
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free
spf rating
50

Ingredients Overview

Here's our quick-to-read summary of the ingredients in this product. Keep scrolling if you'd like to learn more about what each ingredient does!
Ingredient
Features
1
Skin Conditioning, Solvent
2
Emollient, Skin Conditioning, Solvent
3
Humectant, Masking, Skin Conditioning, Solvent
1 / 0
4
UV Absorber, UV Filter
Chemical UV Filter IconMay cause irritation IconMay worsen Rosacea Icon
5
UV Absorber, UV Filter
0 / 0
Chemical UV Filter IconNon-Reef-Safe IconMay worsen Rosacea Icon
6
Skin Conditioning, UV Absorber, UV Filter
Chemical UV Filter Icon
7
Abrasive, Absorbent
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon
8
UV Absorber, UV Filter
Chemical UV Filter Icon
9
Skin Conditioning
10
Humectant, Skin Conditioning, Skin Protecting, Solvent
0 / 0
Helps hydrate Dry Skin IconHelps brighten skin Icon
11
Emollient, Skin Conditioning
12
Skin Conditioning, Solvent
13
Emollient, Emulsifying, Emulsion Stabilising, Masking
2 / 2
Fatty Alcohol Icon
14
Cosmetic Colorant
15
Absorbent, Emulsion Stabilising, Stabilising
16
Skin Conditioning, Skin Protecting, Soothing
0 / 0
Helps reduce Skin Redness IconHelps reduce irritation IconGood for Scar Healing Icon
17
Antioxidant, Skin Conditioning
0 / 0
Vitamin E IconAntioxidant IconHelps brighten skin Icon
18
Emulsion Stabilising
19
Emulsion Stabilising, Masking
0 / 0
20
Emollient, Humectant, Skin Protecting
21
Skin Conditioning
22
Humectant, Skin Conditioning
0 / 0
Hyaluronic Acid Icon
23
Humectant, Skin Conditioning
24
25
Skin Conditioning
26
Skin Conditioning
27
Skin Conditioning
28
Skin Conditioning
29
30
Antimicrobial, Antioxidant, Skin Conditioning, UV Absorber
Antioxidant Icon
31
Buffering
32
33
Antioxidant
Antioxidant Icon
34
Masking, Preservative
Preservative Icon
35
Preservative
Preservative Icon
36
Masking, Perfuming
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Ingredients Explained

This product contains 36 ingredients. Click on any ingredient to learn more about it
1
What it does: Skin Conditioning, Solvent
Community Rating: Loved

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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
2
What it does: Emollient, Skin Conditioning, Solvent
Community Rating: Disliked

Dibutyl 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 Adipate
3
What it does: Humectant, Masking, Skin Conditioning, Solvent
Community Rating: Mixed

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.

Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.

4
What it does: UV Absorber, UV Filter
Community Rating: Very Disliked

Also 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 Methoxydibenzoylmethane
5
What it does: UV Absorber, UV Filter
Community Rating: Disliked

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.

Commonly found in sunscreens, Ethylhexyl Salicylate is created from salicylic acid and 2-ethylhexanol. You might know salicylic acid as the effective acne fighter ingredient and BHA.

The ethylhexanol in this ingredient is a fatty alcohol and helps hydrate your skin, similar to oils. It is an emollient, which means it traps moisture into the skin.

According to manufacturers, Ethylhexyl Salicylate absorbs UV wavelength of 295-315 nm, with a peak absorption at 307-310 nm. UVA rays are linked to long term skin damage, such as hyperpigmentation. UVB rays emit more energy and are capable of damaging our DNA. UVB rays cause sunburn.

Learn more about Ethylhexyl Salicylate
6
What it does: Skin Conditioning, UV Absorber, UV Filter
Community Rating: Liked

You might know this ingredient as Tinosorb S or Bemotrizinol. It is a UV filter that covers both UVA and UVB rays.

Bemotrizinol has two peak UV absorption peaks ( 310 and 340 nm) and is able to absorb both UV-A and UV-B rays. Skin exposed to UV causes free-radical molecules to form. This ingredient works by preventing the UV from reaching your skin.

It is highly photostable and helps prevent the photodegration of other sunscreen ingredients such as avobenzone.

Bemotrizinol is not approved in the US but is allowed in the EU, Australia, and Asia.

In fact, it is the most effective UV absorber at maximum concentration (measured by SPF) permitted by in the EU.

It is oil-soluble.

Learn more about Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
7
What it does: Abrasive, Absorbent
Community Rating: Disliked

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.

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 Silica
8
What it does: UV Absorber, UV Filter
Community Rating: Liked

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
9
What it does: Skin Conditioning

We don't have a description for Polyester-7.

10
What it does: Humectant, Skin Conditioning, Skin Protecting, Solvent
Community Rating: Loved

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
11
What it does: Emollient, Skin Conditioning

We don't have a description for Neopentyl Glycol Diheptanoate.

12
What it does: Skin Conditioning, Solvent
Community Rating: Mixed

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

In products that are water-based, this ingredient can help stabilize perfumes and fragrances. It can also help make the texture of products softer and more smooth.

13
What it does: Emollient, Emulsifying, Emulsion Stabilising, Masking
Community Rating: Very Disliked

Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.

Cetyl Alcohol is not related to SD alcohol, denatured alcohol, or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols.

14
What it does: Cosmetic Colorant
Community Rating: Disliked

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

It's main function is to add a white color to cosmetics. It can also be mixed with other colors to create different shades.

Ci 77891 is commonly found in sunscreens due to its ability to block UV rays.

Learn more about CI 77891
15
What it does: Absorbent, Emulsion Stabilising, Stabilising

Microcrystalline Cellulose is another name for refined wood pulp. It is used as an emulsifier and mattifying ingredient. As an emulsifier, it helps keep ingredients together.

16
What it does: Skin Conditioning, Skin Protecting, Soothing
Community Rating: Loved

Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.

Some studies have shown this ingredient can promote wound healing with higher concentrations.

Allantoin is derived from the comfrey plant but produced synthetically for cosmetic products to ensure purity.

Learn more about Allantoin
17
What it does: Antioxidant, Skin Conditioning
Community Rating: Liked

Tocopheryl 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 Acetate
18
What it does: Emulsion Stabilising
Community Rating: Very Disliked

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken and improve the texture of products.

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is also an emulsifier. Due to its properties, it can prevent water and oil ingredients from separating.

19
What it does: Emulsion Stabilising, Masking

Cellulose Gum is a water-soluble polymer that comes from cellulose. It is used to change the texture of a product and to help stabilize emulsions.

As an emulsifier, cellulose gum specifically thicken the texture of water-based products.

This ingredient is considered hypoallergenic and non-toxic. Cellulose Gum can be found in cosmetics, food, and other household goods such as paper products.

Learn more about Cellulose Gum
20
What it does: Emollient, Humectant, Skin Protecting
Community Rating: Disliked

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.

As a colorant, Aluminum Hydroxide may add opacity, or reduce the transparency. Aluminum hydroxide is contains both basic and acidic properties.

According to manufacturers, this ingredient is an emollient and humectant. This means it helps hydrate the skin.

In medicine, this ingredient is used to help relieve heartburn and help heal ulcers.

Learn more about Aluminum Hydroxide
21
What it does: Skin Conditioning

We don't have a description for Schisandra Chinensis Fruit Extract.

22
What it does: Humectant, Skin Conditioning
Community Rating: Loved

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.

Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate
23
What it does: Humectant, Skin Conditioning
Community Rating: Loved

Diglycerin is a humectant. It is derived from glycerin, which is naturally found in your skin.

As a humectant, it helps draw moisture to the skin from the air.

Sodium Lauroyl Glutamate is the sodium salt from the lauric acid of glutamic acid.

It is a surfactant and helps cleanse the skin. Surfactants gather oil, dirt, and other pollutants from your skin so they may be washed away easily.

25
What it does: Skin Conditioning

We don't have a description for Artemisia Umbelliformis Extract.

26
What it does: Skin Conditioning

Buddleja Davidii Leaf Extract is native to China and Japan. It is also known as the Butterfly Bush as it provides food for butterflies.

Buddleja Davidii is rich in antioxidants. Antioxidants help fight free-radical molecules. These unstable molecules may damage your skin cells. By helping to stabilize them, antioxidants may help with anti-aging.

27
What it does: Skin Conditioning

We don't have a description for Peucedanum Ostruthium Leaf Extract.

28
What it does: Skin Conditioning
Community Rating: Loved

Lysine is an essential amino acid. Your body is unable to produce it naturally and we mainly get lysine from food sources.

Our bodies use lysine for growth and tissue repair. The skin uses amino acids as a precursor for building protein, and therefore keratins, collagen and elastin.

29
What it does:
Community Rating: Mixed

We don't have a description for Magnesium Chloride.

30
What it does: Antimicrobial, Antioxidant, Skin Conditioning, UV Absorber

Pinus Pinaster Bark/Bud Extract is an antioxidant.

31
What it does: Buffering
Community Rating: Mixed

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

Tetrasodium Glutamate Diacetate is a chelating agent. Chelating agents help prevent metal ions from binding to other ingredients. This helps prevent unwanted effects and reactions from a product. These metal ions may come from water and are found in miniscule amounts.

Tetrasodium Glutamate Diacetate can also help other preservatives be more effective.

33
What it does: Antioxidant
Community Rating: Liked

Hydroxyacetophenone is antioxidant and helps with skin conditioning.

Antioxidants help fight off free-radical molecules. These unstable molecules may damage your skin cells. By helping stabilize free-radicals, antioxidants may help in anti-aging.

Hydroxyacetophenone boosts the efficiency of other preservatives.

Learn more about Hydroxyacetophenone
34
What it does: Masking, Preservative
Community Rating: Disliked

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.

Sodium Benzoate is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.

Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.

We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.

Learn more about Sodium Benzoate
35
What it does: Preservative
Community Rating: Disliked

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

Potassium sorbate is potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

Potassium sorbate is often used with stronger preservatives.

Learn more about Potassium Sorbate
36
What it does: Masking, Perfuming
Community Rating: Very Disliked

Parfum is a catch-all term for an ingredient or more that is used to give aroma to products. Parfum, or fragrance, 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.

In the US, the alternative name for parfum is 'fragrance'. The term '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. One example is Calendula flower extract. Essential oil ingredients still impart a scent or 'fragrance'.

Depending on the blend, it can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Products use parfum often to give products a scent or cover up smells of different ingredients.

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 Parfum
Embed Ingredients

Here's what our community thinks of the 36 ingredients in this product ✨

28% are loved or liked
11% have mixed ratings
31% are disliked or very disliked
31% have no rating yet

When to use

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