Kosas Revealer Skin Improving Foundation SPF 25

Kosas Revealer Skin Improving Foundation SPF 25

SPF 25Efficacy83/100IrritancyMedium·2 UV filters

Works for

Sun protection
SPF 25 · 2 UV filters · Broad spectrum
Weak protectionSPF under 30
SPF 25Broad spectrumMineral filters

This product offers broad spectrum sun protection, but it is weak. We recommend to use a broad spectrum sunscreen with at least SPF 30.

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 skin~0.2–0.4%
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 colorant7.5%
~ marks concentrations estimated from label position and typical use levels
Reef-safe
No oxybenzone or octinoxate — the two filters banned in Hawaii, Florida Keys and Aruba.
Moisturizing
Niacinamide, Palmitoyl tripeptide-5 + 14 more
Works well
What the product description says
“- Peptides & Hyaluronic Acid plump and hydrate”
Source: Naturisimo

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: galactoarabinan, glycerin.

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, squalane.

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide, palmitoyl tripeptide-5, panthenol

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.95–1.15%
Palmitoyl tripeptide-5HeroEffect: HighA type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles~0.35–0.6%
PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.3–0.6%
Ethylhexyl olivateKey activeEffect: HighHelps soften the upper layer of the skin~5.7–6.9%
UndecaneKey active· EmollientEffect: MediumHelps create a non-greasy finish on the skin~3.3–4%
Polyglyceryl-2 dipolyhydroxystearateKey activeEffect: HighHelps to soften the upper layer of the skin~2.5–3%
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~2.2–2.7%
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~1.3–1.6%
GalactoarabinanKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin~0.6–0.9%
Cetyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~0.5–0.75%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.4–0.6%
SqualaneKey active· Emollient, OcclusiveEffect: HighAn oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.~0.35–0.65%
Octyldodecanol· EmollientEffect: LowAn emollient that helps to soften the skin and create a pleasant product texture and stabilize the formulation~4.5–5.5%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~0.3–0.55%
LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.3–0.5%
TocopherolEffect: Low, below effective dosePure 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~0.2–0.35%
Evens skin tone
Niacinamide
Works well
What the product description says
“- Niacinamide & Caffeine brighten and smooth”
Source: Naturisimo

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: niacinamide

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

This product can also help with skin tone because it offers sun protection. Sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations. This is why sun protection is the best strategy for maintaining an even skin tone. We, however, do not recommend using this product as a sunscreen because the protection it offers is not strong enough).

NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.95–1.15%
Anti-aging
Side benefit · Niacinamide, Palmitoyl tripeptide-5 + 1 more
Works well

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains niacinamide.

These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: palmitoyl tripeptide-5.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.95–1.15%
Palmitoyl tripeptide-5Key activeEffect: MediumA type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles~0.35–0.6%
TocopherolEffect: Low, below effective dosePure 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~0.2–0.35%
Anti-blemish
Side benefit · Niacinamide
Works well

This product can help reduce breakouts and clogged pores because it contains the following ingredient: niacinamide. This ingredient is used for treating acne and can have a noticeable effect.

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.95–1.15%

Can it cause trouble?

Irritancy
1 strong irritant: Arnica montana flower extract
Medium risk
We flagged 11 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Glyceryl oleateHelps oil and water mix together. Can be irritatingHigh~0.45–0.7%est.
Arnica montana flower extractA plant extract that can be irritating. It can have some anti-bacterial properties, but there are no evidence of a beneficial effect for skinHigh~0.25–0.5%est.
UndecaneHelps create a non-greasy finish on the skinMedium~3.3–4%est.
Calcium sodium borosilicateUsed to add shimmerMedium~1.5–1.8%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~1.3–1.6%est.
Polyglyceryl-3 diisostearateHelps oil and water mix togetherMedium~0.7–1.05%est.
GalactoarabinanHelps attract water to the upper layer of the skinMedium~0.6–0.9%est.
TridecaneHelps create a dry, non-greasy finish of the skinMedium~0.5–0.75%est.
CaffeineMight be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyesMedium~0.3–0.5%est.
Polyhydroxystearic acidUsed to create a thicker product consistency and stabilize the formulationMedium~0.3–0.5%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~0.3–0.55%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
Polyglyceryl-3 diisostearateHelps oil and water mix together3/5~0.7–1.05%est.

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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Ethylhexyl olivate~5.7–6.9%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Ethylhexyl olivate
Octyldodecanol~4.5–5.5%
Formula
Irritation risk
Low
Works for
Moisturizing

An emollient that helps to soften the skin and create a pleasant product texture and stabilize the formulation

More about Octyldodecanol
Undecane~3.3–4%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps create a non-greasy finish on the skin

More about Undecane
Polyglyceryl-2 dipolyhydroxystearate~2.5–3%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps to soften the upper layer of the skin

More about Polyglyceryl-2 dipolyhydroxystearate
Glycerin~2.2–2.7%
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
Mica~1.8–2.2%
Formula
Irritation risk
Low

Creates an illusion of smoother and more radiant skin tone. Adds shimmer to the skin by reflecting light

More about Mica
Calcium sodium borosilicate~1.5–1.8%
Irritant · medium
Irritation risk
Medium

Used to add shimmer

More about Calcium sodium borosilicate
Caprylic/capric triglyceride~1.3–1.6%
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
Niacinamide~0.95–1.15%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Evens skin toneMoisturizingAnti-blemishAnti-agingReduces irritationAnti-inflammatoryReduces rednessAntibacterial

Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production

More about Niacinamide
Polyglyceryl-3 diisostearate~0.7–1.05%
Comedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5
Works for
Cleansing

Helps oil and water mix together

More about Polyglyceryl-3 diisostearate
Galactoarabinan~0.6–0.9%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps attract water to the upper layer of the skin

More about Galactoarabinan
Tridecane~0.5–0.75%
Irritant · medium
Irritation risk
Medium

Helps create a dry, non-greasy finish of the skin

More about Tridecane
Propanediol~0.5–0.75%
Formula
Irritation risk
Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol
Cetyl alcohol~0.5–0.75%
Key active
Irritation risk
Low
Works for
CleansingMoisturizing

A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together

More about Cetyl alcohol
Glyceryl oleate~0.45–0.7%
Irritant · high
Irritation risk
High
Works for
Cleansing

Helps oil and water mix together. Can be irritating

More about Glyceryl oleate
Sodium hyaluronate~0.4–0.6%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Palmitoyl tripeptide-5~0.35–0.6%
Hero · Moisturizing
Irritation risk
Low
Works for
MoisturizingAnti-aging

A type of peptide. Peptides are excellent moisturizers and might be able support collagen production reducing fine lines and wrinkles

More about Palmitoyl tripeptide-5
Panthenol~0.3–0.6%
Hero · Moisturizing
Irritation risk
Low
Works for
MoisturizingReduces rednessReduces irritation

Helps attract water to the upper layer of the skin and can help improve skin barrier function

More about Panthenol
Squalane~0.35–0.65%
Key active
Irritation risk
Low
Works for
Moisturizing

An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.

More about Squalane
Caffeine~0.3–0.5%
Irritant · medium
Irritation risk
Medium
Works for
De-puffingAnti-oxidation

Might be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyes

More about Caffeine
Arnica montana flower extract~0.25–0.5%
Irritant · high
Irritation risk
High

A plant extract that can be irritating. It can have some anti-bacterial properties, but there are no evidence of a beneficial effect for skin

More about Arnica montana flower extract
Artemisia capillaris flower extract~0.3–0.55%
Formula
Ethyl ferulate~0.25–0.45%
Formula
Irritation risk
Low
More about Ethyl ferulate
Sodium gluconate~0.25–0.45%
Formula
Irritation risk
Low

Helps stabilize product formulations

More about Sodium gluconate
Polyhydroxystearic acid~0.3–0.5%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Used to create a thicker product consistency and stabilize the formulation

More about Polyhydroxystearic acid
Maltodextrin~0.25–0.45%
Formula
Irritation risk
Low
Works for
Mattifying

Used to stabilize the product formulation and can help absorb oil

More about Maltodextrin
Pentylene glycol~0.3–0.55%
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
Lecithin~0.3–0.5%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin

More about Lecithin
Hydrogenated lecithin~0.25–0.4%
Formula
Irritation risk
Low
Works for
Cleansing

Helps to retain moisture by creating a protective barrier on the skin. Rich in fatty acids. Improves product texture and helps with the penetration of other ingredients.

More about Hydrogenated lecithin
Tocopherol~0.2–0.35%
Formula
Irritation risk
Low
Works for
Anti-oxidationMoisturizingAnti-inflammatoryAnti-aging

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
Titanium dioxide~0.2–0.4%
UV filterUnder-dosed
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
Iron oxides~0.1–0.15%
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
Zinc oxide7.5%
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
Ingredient list view

Water, Ethylhexyl olivate, Octyldodecanol, Undecane, Polyglyceryl-2 dipolyhydroxystearate, Glycerin, Mica, Calcium sodium borosilicate, Caprylic/capric triglyceride, Niacinamide, Polyglyceryl-3 diisostearate, Galactoarabinan, Tridecane, Propanediol, Cetyl alcohol, Glyceryl oleate, Sodium hyaluronate, Palmitoyl tripeptide-5, Panthenol, Squalane, Caffeine, Arnica montana flower extract, Artemisia capillaris flower extract, Ethyl ferulate, Sodium gluconate, Polyhydroxystearic acid, Maltodextrin, Pentylene glycol, Lecithin, Hydrogenated lecithin, Tocopherol, Titanium dioxide, Iron oxides, Zinc oxide

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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
KosasRevealer Skin Improving Foundation SPF 25YOUR PRODUCTCeraVeMineral Sunscreen Lotion, SPF 30KnoursKoolsol Ultra Light Invisible Mineral Sunscreen Broad Spectrum SPF 50innisfreeGreen Tea Hyaluronic Hydrating Sun Serum SPF50 Sérum Solaire
Match—70%68%68%
Price—$19.99—$24.00
Shared key ingredients—6 of 144 of 145 of 14
Key difference—PhytosphingosineMadecassosideMadecassoside
Irritancy Medium Low Low Low
SPFSPF 25SPF 30SPF 50SPF 50
Drying alcohol————
View product Shop Shop Shop

More alternatives: NEEDLY Mild non-nano sun milk SPF 50+ PA++++AXIS Complete No-Stress Physical Sunscreen SPF 50+ / PA ++++

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Product summary

"Kosas - Revealer Skin Improving Foundation SPF 25" offers broad spectrum protection. It means that it protects from both UVA and UVB rays (you can remember UVB as "burning" sunlight - they cause sunburn. You can remember UVA rays as "aging" - they do not lead to sunburn, but they cause photodamage and contribute to early signs of skin aging and hyperpigmentation). On the negative side, the SPF of this product is not high enough. We recommend to use a sunscreen with at least SPF 30 daily.

It also works as a moisturizer, so you do not have to use an additional hydrating product.

Sunscreen filters

This product is a mineral sunscreen. It uses zinc oxide for sun protection. Zinc oxide almost never irritates the skin or stings eyes, but it can leave a white cast.

Irritation risk

This product contains some common irritants, including those without a benefit for the skin. We assess the overall irritancy of it to be medium. 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.

About the brand

According to Cruelty-Free Kitty "Kosas" is cruelty free and so is its parent company.

Price

The product retails for 42.00$ in the United States and for 35.00£ 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 19 studies and safety reviews.

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Kosas Revealer Skin Improving Foundation SPF 25
KosasRevealer Skin Improving Foundation SPF 25

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