iS Clinical Extreme Protect SPF 40

iS Clinical Extreme Protect SPF 40

SPF 40Efficacy90/100IrritancyLow·2 UV filters
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Works for

1 of 1 advertised claim delivered

Sun protection
SPF 40 · 2 UV filters
Broad spectrum
SPF 40Broad spectrumMineral filters

This product offers a good level of protection against both UVB and UVA rays.

It is a mineral sunscreen. In other words, it contains non-organic UV filters. It will probably not sting your eyes but might leave a white cast.

This product can be considered "reef safe" because it does not contain the UV filters (oxybenzone and octinoxate) that can be harmful to coral reefs when present in the water in high concentrations.

UV spectrum
UVB290–320 nmUVA II320–340 nmUVA I340–400 nm
Titanium Dioxide
Zinc Oxide
FilterCoverageWhat it doesEst. amount
Titanium Dioxide Mineral UVBUVA2 Photo-stable Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin1.3%
Zinc Oxide Mineral UVBUVA Photo-stable A broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant15.3%
Reef-safe
No oxybenzone or octinoxate — the two filters banned in Hawaii, Florida Keys and Aruba.
Evens skin tone
Not advertised by the brand · 1 ingredient credited for this claim
Strong support

This product offers broad spectrum sun protection. It means that it can prevent hyperpigmentation and help keep the skin tone even (sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations).

Ethyl linoleateEffect: LowHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking~0.55–0.85%
Anti-oxidation
Not advertised by the brand · 3 ingredients credited for this claim
Strong support

This product contains antioxidants (asiaticoside, tocopherol) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

TocopherolKey activeEffect: HighPure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~2.9–3.6%
AsiaticosideKey activeEffect: HighAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (madecasosside, asiatic acid and madecassic acid), asiaticoside has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating~0.5–0.7%
Olea europaea leaf extractEffect: LowA plant extract that might have some anti-oxidant and anti-inflammatory properties but evidence for effectiveness in skin is missing~0.4–0.65%
Anti-aging
Not advertised by the brand · 5 ingredients credited for this claim
Strong support

This product can help prevent early signs of skin aging because it offers a good level of broad spectrum sun protection. Sun damage is the main cause of premature skin aging, and protecting your skin from the sun is the best anti-aging strategy.

These ingredients in the product might also be helpful for reducing and preventing fine lines, wrinkles, and skin elasticity, even though there is no conclusive evidence for their effectiveness: asiaticoside.

AsiaticosideKey activeEffect: MediumAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (madecasosside, asiatic acid and madecassic acid), asiaticoside has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating~0.5–0.7%
TocopherolEffect: LowPure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~2.9–3.6%
Panthenyl triacetateEffect: LowA stable oil-soluble derivative of vitamin B5. It can help support skin barrier and reduce inflammation in skin~0.75–1.1%
Magnesium aluminum silicateEffect: LowMight be helpful in restoring skin barrier function and, when combined with zinc carbonate and malonic acid, reducing fine lines and wrinkles by stimulating elastin production. Also helps stabilize the product formulation~0.4–0.65%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.2–0.4%
Anti-blemish
Not advertised by the brand · 2 ingredients credited for this claim
Good support

This product might be able to help reduce blemishes and clogged pores because it contains ethyl linoleate.

Ethyl linoleateKey activeEffect: HighHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking~0.55–0.85%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.2–0.4%
Moisturizing
Not advertised by the brand · 16 ingredients credited for this claim
Good support

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: glycerin, butylene glycol.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: caprylic/capric triglyceride, ethyl linoleate.

GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~4.7–5.7%
Madecassic acidKey activeEffect: HighAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (asiaticoside, madecasosside and asiatic acid), madecassic acid has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating~0.5–0.75%
Panthenyl triacetateKey activeEffect: HighA stable oil-soluble derivative of vitamin B5. It can help support skin barrier and reduce inflammation in skin~0.75–1.1%
Asiatic acidKey activeEffect: HighAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (asiaticoside, madecasosside and madecassic acid) asiatic acid has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating~0.55–0.8%
AsiaticosideKey activeEffect: HighAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (madecasosside, asiatic acid and madecassic acid), asiaticoside has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating~0.5–0.7%
Caprylic/capric triglycerideKey active· Emollient, OcclusiveEffect: HighA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~3.8–4.6%
Ethyl linoleateKey active· EmollientEffect: HighHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking~0.55–0.85%
C12-15 alkyl benzoateKey active· EmollientEffect: MediumEnhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth~5.7–6.9%
Tribehenin· EmollientEffect: LowUsed to create a thicker product consistency and soften the upper layer of the skin~1.6–1.9%
Cetyl peg/ppg-10/1 dimethiconeEffect: LowA type of silicone that helps water and oil mix together. Can help to soften upper layer of the skin~0.95–1.15%
Hexyl laurate· EmollientEffect: LowHelps soften the upper layer of the skin and create a nice product consistency~1–1.2%
Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~0.8–1.2%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~2.2–2.7%
Propylene glycol· HumectantEffect: LowHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating~0.65–1%
TocopherolEffect: LowPure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~2.9–3.6%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.2–0.4%

Can it cause trouble?

Irritancy
17 flagged ingredients
Low risk
We flag 17 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.
IngredientFunctionIrritationEst. amount
Propylene glycolHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritatingHigh~0.65–1%est.
Oleyl alcoholUsed as a fragranceHigh~0.25–0.45%est.
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~3.8–4.6%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~2.2–2.7%est.
Polyhydroxystearic acidUsed to create a thicker product consistency and stabilize the formulationMedium~1.8–2.2%est.
EthylhexylglycerinA preservativeMedium~1.1–1.4%est.
Polyglyceryl-4 isostearateHelps water and oil mix togetherMedium~1–1.3%est.
Hexyl laurateHelps soften the upper layer of the skin and create a nice product consistencyMedium~1–1.2%est.
Aluminum stearateUsed to help evenly disperse other ingredients (for example, pigment) in a formulationMedium~0.75–1.15%est.
Ethyl linoleateHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lackingMedium~0.55–0.85%est.
AsiaticosideAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (madecasosside, asiatic acid and madecassic acid), asiaticoside has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritatingMedium~0.5–0.7%est.
Asiatic acidAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (asiaticoside, madecasosside and madecassic acid) asiatic acid has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritatingMedium~0.55–0.8%est.
Madecassic acidAn active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (asiaticoside, madecasosside and asiatic acid), madecassic acid has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritatingMedium~0.5–0.75%est.
Olea europaea leaf extractA plant extract that might have some anti-oxidant and anti-inflammatory properties but evidence for effectiveness in skin is missingMedium~0.4–0.65%est.
Sorbitol/sebacic acid copolymer behenateUsed to thicken the product textureMedium~0.4–0.65%est.
Aloe barbadensis leaf juiceTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~0.2–0.4%est.
Disodium edtaStabilizes the product formulationMedium~0.15–0.25%est.
Comedogenic
1 ingredient rated 2 or more on the 0–5 pore-clogging scale
1 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Oleyl alcoholUsed as a fragrance3/5~0.25–0.45%est.
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Ingredients

Filter by role to see what each ingredient is doing.

Zinc oxide15.3%
UV filterKey active
Irritation risk
Low
Works for
Sun protection

A broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant

More about Zinc oxide
Titanium dioxide1.3%
UV filterKey active
Irritation risk
Low
Works for
Sun protection

Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin

More about Titanium dioxide
Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
C12-15 alkyl benzoate~5.7–6.9%
Key active
Irritation risk
Low
Works for
Moisturizing

Enhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth

More about C12-15 alkyl benzoate
Glycerin~4.7–5.7%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Caprylic/capric triglyceride~3.8–4.6%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Tocopherol~2.9–3.6%
Key active
Irritation risk
Low
Works for
Anti-oxidationAnti-agingAnti-inflammatoryMoisturizing

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol
Sorbitan stearate~2.5–3%
Formula
Irritation risk
Low
Works for
Cleansing

Helps water and oil mix together

More about Sorbitan stearate
Pentylene glycol~2.2–2.7%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Polyhydroxystearic acid~1.8–2.2%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Used to create a thicker product consistency and stabilize the formulation

More about Polyhydroxystearic acid
Tribehenin~1.6–1.9%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a thicker product consistency and soften the upper layer of the skin

More about Tribehenin
Polyurethane-62~1.3–1.6%
Formula
Ethylhexylglycerin~1.1–1.4%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Polyglyceryl-4 isostearate~1–1.3%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Polyglyceryl-4 isostearate
Hexyl laurate~1–1.2%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps soften the upper layer of the skin and create a nice product consistency

More about Hexyl laurate
Cetyl peg/ppg-10/1 dimethicone~0.95–1.15%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

A type of silicone that helps water and oil mix together. Can help to soften upper layer of the skin

More about Cetyl peg/ppg-10/1 dimethicone
Butylene glycol~0.8–1.2%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol
Xanthan gum~0.8–1.2%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a thicker product consistency

More about Xanthan gum
Aluminum stearate~0.75–1.15%
Irritant · medium
Irritation risk
Medium

Used to help evenly disperse other ingredients (for example, pigment) in a formulation

More about Aluminum stearate
Panthenyl triacetate~0.75–1.1%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-aging

A stable oil-soluble derivative of vitamin B5. It can help support skin barrier and reduce inflammation in skin

More about Panthenyl triacetate
Propylene glycol~0.65–1%
Irritant · high
Irritation risk
High
Works for
Moisturizing

Helps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating

More about Propylene glycol
Ethyl linoleate~0.55–0.85%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Anti-blemishMoisturizingEvens skin toneAnti-inflammatory

Helps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking

More about Ethyl linoleate
Asiaticoside~0.5–0.7%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-oxidationReduces irritationAnti-aging

An active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (madecasosside, asiatic acid and madecassic acid), asiaticoside has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating

More about Asiaticoside
Asiatic acid~0.55–0.8%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingReduces irritationAnti-inflammatory

An active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (asiaticoside, madecasosside and madecassic acid) asiatic acid has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating

More about Asiatic acid
Madecassic acid~0.5–0.75%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingReduces irritation

An active compound of Centella Asiatica plant extract. In combination with other active compounds of Centella Asiatica extract (asiaticoside, madecasosside and asiatic acid), madecassic acid has been shown to be helpful in wound-healing, restoring skin barrier function and supporting collagen production in skin. It can, however, itself be irritating

More about Madecassic acid
Alumina~0.6–0.85%
Formula
Irritation risk
Low

The same compound that is used safely in dental implants and bone cements. In cosmetics, it is used to improve the consistency of products

More about Alumina
Olea europaea leaf extract~0.4–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant extract that might have some anti-oxidant and anti-inflammatory properties but evidence for effectiveness in skin is missing

More about Olea europaea leaf extract
Sorbitol/sebacic acid copolymer behenate~0.4–0.65%
Irritant · medium
Irritation risk
Medium

Used to thicken the product texture

More about Sorbitol/sebacic acid copolymer behenate
Magnesium aluminum silicate~0.4–0.65%
Formula
Irritation risk
Low
Works for
Anti-aging

Might be helpful in restoring skin barrier function and, when combined with zinc carbonate and malonic acid, reducing fine lines and wrinkles by stimulating elastin production. Also helps stabilize the product formulation

More about Magnesium aluminum silicate
Trideceth-6~0.35–0.65%
Formula
Irritation risk
Low
Works for
Cleansing

Helps oil and water mix together

More about Trideceth-6
Phenoxyethanol~0.3–0.5%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Oleyl alcohol~0.25–0.45%
Comedogenic 3/5Irritant · high
Irritation risk
High
Comedogenicity
3/5

Used as a fragrance

More about Oleyl alcohol
Aloe barbadensis leaf juice~0.2–0.4%
Irritant · medium
Irritation risk
Medium
Works for
MoisturizingAntibacterialAnti-inflammatoryReduces rednessReduces irritationAnti-blemishAnti-aging

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf juice
Isostearic acid~0.25–0.5%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a nice product texture

More about Isostearic acid
Disodium edta~0.15–0.25%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Polyquaternium-7~0.15–0.25%
Formula
Irritation risk
Low

Helps soften the upper layer of the skin and create a nice product finish

More about Polyquaternium-7
Iron oxides~0.1–0.2%
Formula
Irritation risk
Low
Works for
Sun protection

An umbrella term for the following three colorants: CI 77491, CI 77492, CI 77499. They might be able to offer some protection against visible light, but the degree of the protection is not clear

More about Iron oxides
Ingredient list view

Zinc oxide, Titanium dioxide, Water, C12-15 alkyl benzoate, Glycerin, Caprylic/capric triglyceride, Tocopherol, Sorbitan stearate, Pentylene glycol, Polyhydroxystearic acid, Tribehenin, Polyurethane-62, Ethylhexylglycerin, Polyglyceryl-4 isostearate, Hexyl laurate, Cetyl peg/ppg-10/1 dimethicone, Butylene glycol, Xanthan gum, Aluminum stearate, Panthenyl triacetate, Propylene glycol, Ethyl linoleate, Asiaticoside, Asiatic acid, Madecassic acid, Alumina, Olea europaea leaf extract, Sorbitol/sebacic acid copolymer behenate, Magnesium aluminum silicate, Trideceth-6, Phenoxyethanol, Oleyl alcohol, Aloe barbadensis leaf juice, Isostearic acid, Disodium edta, Polyquaternium-7, Iron oxides

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
iS ClinicalExtreme Protect SPF 40YOUR PRODUCTPURITOComfy Water Sun BlockSKIN 1004.Centella Air-Fit Suncream Light SPF30 PA++++
Match—50%50%
Price$85.00$16.90−$68.10—
Shared key ingredients—6 of 105 of 10
Key difference—MadecassosideNiacinamide
Irritancy Low Low Low
SPFSPF 40SPF 50SPF 30
Drying alcohol———
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Product summary

Based on the ingredients included, we believe that "iS Clinical - Extreme Protect SPF 40" can offer reliable sun protection. We love that it can protect from both UVA and UVB rays (not all sunscreens with SPF ratings give UVA protection. UVA rays do not cause sunburn, but still damage our skin and lead to early aging).

Its formula is also hydrating, so you might not need an additional moistruizer during the day. Like all broad-spectrum sunscreens, this product helps prevent early signs of aging.

Sunscreen filters

This product is a mineral sunscreen. It uses titanium dioxide and zinc oxide for sun protection. Both titanium dioxide and zinc oxide almost never irritate even the most sensitive skin and eyes, but can leave a white cast.

Irritation risk

It contains some common irritants, including those without a benefit for the skin. We assess the overall irritancy of this product to be low. For a detailed overview of all potential irritants: click here

You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.

Price

The product retails from 74.80$ up to 85.00$ in the United States and at around 80.00£ in the United Kingdom.

For a detailed price comparison: click here.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 23 studies and safety reviews.

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iS Clinical Extreme Protect SPF 40
iS ClinicalExtreme Protect SPF 40

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As an Amazon Associate, WIMJ earns from qualifying purchases.