SUNDAY RILEY Saturn Sulfur + Niacinamide Spot Treatment

SUNDAY RILEY Saturn Sulfur + Niacinamide Spot Treatment

Efficacy100/100IrritancyHigh

Works for

Evens skin tone
Niacinamide, Dipotassium glycyrrhizate
Works well
What the product description says
“Skin Type Targeting Breakouts & Acne Pigmentation / Dark Spots Redness The Good Stuff Cruelty Free Fragrance Free Paraben Free Suitable for Pregnancy Sulphate Free Achieve clearer-looking skin with the Sunday Riley Saturn Sulfur Spot Treatment, a fast-acting, medicated 10% sulfur treatment mask that targets multiple forms of acne, including hormonal, inflammatory and acne rosacea.High-strength sulfur helps to clear acne by drying up pore-clogging sebum while also removing dead skin cells.”
Source: SpaceNK

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.

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~2.6–3.2%
Dipotassium glycyrrhizateEffect: Low, below effective doseA salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening~0.7–1.05%
Anti-blemish
Sulfur, Niacinamide + 4 more
Works well
What the product description says
“Saturn Sulfur + Niacinamide Spot Treatment”
From product name

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

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: zinc pca

SulfurHeroEffect: High~7.8–9.5%
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~2.6–3.2%
Zinc pcaKey activeEffect: MediumA compound that combines zinc with a hydrating ingredient PCA. Might to be helpful against acne and clogged pores. Can help calm down inflammation in skin. Could be helpful in reducing the formation of free radicals in skin. Might help to reduce fine lines in wrinkles, but solid evidence is missing~1.2–1.5%
BentoniteEffect: LowHelps stabilize the product formulation~2.3–2.8%
Melia azadirachta leaf extractEffect: LowA plant extract that has anti-bacterial properties. Can be used to preserve the product. Can be irritating~0.6–0.85%
AllantoinEffect: Low, below effective doseHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.9–1.1%
Anti-aging
Not advertised by the brand · Niacinamide, Zinc pca + 1 more
Works well

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

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~2.6–3.2%
Zinc pcaEffect: LowA compound that combines zinc with a hydrating ingredient PCA. Might to be helpful against acne and clogged pores. Can help calm down inflammation in skin. Could be helpful in reducing the formation of free radicals in skin. Might help to reduce fine lines in wrinkles, but solid evidence is missing~1.2–1.5%
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~0.3–0.6%
Moisturizing
Not advertised by the brand · Niacinamide, Zinc pca + 6 more
Works well

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": zinc pca, caprylyl glycol.

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. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide

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~2.6–3.2%
Zinc pcaKey active· HumectantEffect: HighA compound that combines zinc with a hydrating ingredient PCA. Might to be helpful against acne and clogged pores. Can help calm down inflammation in skin. Could be helpful in reducing the formation of free radicals in skin. Might help to reduce fine lines in wrinkles, but solid evidence is missing~1.2–1.5%
Corallina officinalis extractKey activeEffect: HighRed algae extract that helps attract water to the upper layer of the skin and might contain antioxidants~0.6–0.9%
Cetyl ethylhexanoate· EmollientEffect: LowAn emollient that helps soften the skin and creates a thicker product texture~3.5–4.3%
Caprylyl glycol· Humectant, EmollientEffect: LowHelps preserve products and creates a nice product texture~0.15–0.25%
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~0.3–0.6%
AllantoinUnder-dosedHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.9–1.1%
Dipotassium glycyrrhizateUnder-dosedA salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening~0.7–1.05%

Can it cause trouble?

Irritancy
3 strong irritants: Melaleuca alternifolia leaf oil, Ocimum basilicum flower/leaf extract + 1 more — patch-test recommended
High risk
We flagged 17 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Melaleuca alternifolia leaf oilAn essential oil that can be irritating. Has some anti-bacterial propertiesHigh~0.65–1%est.
Curcuma longa root extractA plant extract that can contain an active compound curcumin, that may have some anti-inflammatory properties when applied to the skin, but solid research is lacking and the typical concentration used in skincare products is too low. Can be an irritantHigh~0.6–0.85%est.
Melia azadirachta leaf extractA plant extract that has anti-bacterial properties. Can be used to preserve the product. Can be irritatingHigh~0.6–0.85%est.
Ocimum basilicum flower/leaf extractUsed as a fragrance. Canbe irritatingHigh~0.45–0.65%est.
Alcohol denat.Produces temporary toning effect. Can help dissolve other ingredients or preserve productsHigh~0.15–0.3%est.
Sulfur—Medium~7.8–9.5%est.
Isoamyl laurateHelps stabilize emulsions and create a nice product textureMedium~4.6–5.7%est.
Cetyl ethylhexanoateAn emollient that helps soften the skin and creates a thicker product textureMedium~3.5–4.3%est.
Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymerA gelling agent that thickens the product consistency and leaves the skin with a velvety finishMedium~2–2.4%est.
Melia azadirachta flower extractA plant extract that might be helpful to neutralize free radicals in skinMedium~0.5–0.8%est.
Coccinia indica fruit extractA plant extract that might have some anti-oxidant effect helping neutralize free radicals in skinMedium~0.5–0.75%est.
Cucumis melo fruit extractA fruit extract that might have some anti-oxidant propertiesMedium~0.45–0.7%est.
Polysorbate 60Helps oil and water mix togetherMedium~0.45–0.65%est.
Disodium edtaStabilizes the product formulationMedium~0.3–0.55%est.
ChlorphenesinA preservativeMedium~0.15–0.25%est.
Peg-40 hydrogenated castor oilHelps oil and water mix togetherMedium~0.15–0.25%est.
Caprylyl glycolHelps preserve products and creates a nice product textureMedium~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
Corallina officinalis extractRed algae extract that helps attract water to the upper layer of the skin and might contain antioxidants3/5~0.6–0.9%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
Sulfur~7.8–9.5%
Hero · Anti-blemishIrritant · medium
Irritation risk
Medium
Works for
Anti-blemish
More about Sulfur
Isoamyl laurate~4.6–5.7%
Irritant · medium
Irritation risk
Medium

Helps stabilize emulsions and create a nice product texture

More about Isoamyl laurate
Cetyl ethylhexanoate~3.5–4.3%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

An emollient that helps soften the skin and creates a thicker product texture

More about Cetyl ethylhexanoate
Niacinamide~2.6–3.2%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Anti-blemishEvens skin toneAnti-agingMoisturizingReduces irritationReduces rednessAntibacterialAnti-inflammatory

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
Bentonite~2.3–2.8%
Formula
Irritation risk
Low
Works for
Anti-blemish

Helps stabilize the product formulation

More about Bentonite
Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer~2–2.4%
Irritant · medium
Irritation risk
Medium

A gelling agent that thickens the product consistency and leaves the skin with a velvety finish

More about Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer
Polyglyceryl-2 caprate~1.7–2.1%
Formula
Irritation risk
Low
Works for
Cleansing
More about Polyglyceryl-2 caprate
Olive oil glycereth-8 esters~1.4–1.7%
Formula
Irritation risk
Low
Works for
Cleansing
More about Olive oil glycereth-8 esters
Zinc pca~1.2–1.5%
Key active
Irritation risk
Low
Works for
Anti-inflammatoryMoisturizingAnti-blemishAnti-agingAnti-oxidation

A compound that combines zinc with a hydrating ingredient PCA. Might to be helpful against acne and clogged pores. Can help calm down inflammation in skin. Could be helpful in reducing the formation of free radicals in skin. Might help to reduce fine lines in wrinkles, but solid evidence is missing

More about Zinc pca
Allantoin~0.9–1.1%
Under-dosed
Irritation risk
Low
Works for
Anti-inflammatoryMoisturizingReduces irritationAnti-blemishReduces rednessExfoliation

Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated

More about Allantoin
Dipotassium glycyrrhizate~0.7–1.05%
Under-dosed
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryEvens skin tone

A salt derived from licorice. Works as an emollient to soften the upper layer of the skin and can help calm down inflammation. Might be helpful for skin lightening

More about Dipotassium glycyrrhizate
Melaleuca alternifolia leaf oil~0.65–1%
Irritant · high
Irritation risk
High
Works for
Antibacterial

An essential oil that can be irritating. Has some anti-bacterial properties

More about Melaleuca alternifolia leaf oil
Leptospermum scoparium branch/leaf oil~0.65–0.95%
Formula
Curcuma longa root extract~0.6–0.85%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatory

A plant extract that can contain an active compound curcumin, that may have some anti-inflammatory properties when applied to the skin, but solid research is lacking and the typical concentration used in skincare products is too low. Can be an irritant

More about Curcuma longa root extract
Corallina officinalis extract~0.6–0.9%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-oxidation

Red algae extract that helps attract water to the upper layer of the skin and might contain antioxidants

More about Corallina officinalis extract
Melia azadirachta leaf extract~0.6–0.85%
Irritant · high
Irritation risk
High
Works for
AntibacterialAnti-blemish

A plant extract that has anti-bacterial properties. Can be used to preserve the product. Can be irritating

More about Melia azadirachta leaf extract
Amber powder~0.55–0.85%
Formula
Irritation risk
Low

Does not have proven skin benefits

More about Amber powder
Melia azadirachta flower extract~0.5–0.8%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant extract that might be helpful to neutralize free radicals in skin

More about Melia azadirachta flower extract
Coccinia indica fruit extract~0.5–0.75%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant extract that might have some anti-oxidant effect helping neutralize free radicals in skin

More about Coccinia indica fruit extract
Solanum
Not recognized
Cucumis melo fruit extract~0.45–0.7%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A fruit extract that might have some anti-oxidant properties

More about Cucumis melo fruit extract
Lac extract~0.45–0.65%
Formula
Irritation risk
Low
More about Lac extract
Ocimum basilicum flower/leaf extract~0.45–0.65%
Irritant · high
Irritation risk
High

Used as a fragrance. Canbe irritating

More about Ocimum basilicum flower/leaf extract
Quartz~0.5–0.75%
Formula
Irritation risk
Low

A mineral. It does not have any confirmed benefit for the skin

More about Quartz
Polysorbate 60~0.45–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Polysorbate 60
Sorbitan isostearate~0.35–0.65%
Formula
Irritation risk
Low
Works for
Cleansing

Helps oil and water mix together

More about Sorbitan isostearate
Tocopherol~0.3–0.6%
Formula
Irritation risk
Low
Works for
Anti-oxidationAnti-inflammatoryAnti-agingMoisturizing

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
Disodium edta~0.3–0.55%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Phenoxyethanol~0.2–0.4%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Polysorbate 20~0.25–0.45%
Formula
Irritation risk
Low
Works for
Cleansing

Helps oil and water mix together

More about Polysorbate 20
Alcohol denat.~0.15–0.3%
Irritant · high
Irritation risk
High

Produces temporary toning effect. Can help dissolve other ingredients or preserve products

More about Alcohol denat.
Chlorphenesin~0.15–0.25%
Irritant · medium
Irritation risk
Medium

A preservative

More about Chlorphenesin
Peg-40 hydrogenated castor oil~0.15–0.25%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Peg-40 hydrogenated castor oil
Caprylyl glycol~0.15–0.25%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps preserve products and creates a nice product texture

More about Caprylyl glycol
Ingredient list view

Water, Sulfur, Isoamyl laurate, Cetyl ethylhexanoate, Niacinamide, Bentonite, Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, Polyglyceryl-2 caprate, Olive oil glycereth-8 esters, Zinc pca, Allantoin, Dipotassium glycyrrhizate, Melaleuca alternifolia leaf oil, Leptospermum scoparium branch/leaf oil, Curcuma longa root extract, Corallina officinalis extract, Melia azadirachta leaf extract, Amber powder, Melia azadirachta flower extract, Coccinia indica fruit extract, Unknown, Cucumis melo fruit extract, Lac extract, Ocimum basilicum flower/leaf extract, Quartz, Polysorbate 60, Sorbitan isostearate, Tocopherol, Disodium edta, Phenoxyethanol, Polysorbate 20, Alcohol denat., Chlorphenesin, Peg-40 hydrogenated castor oil, Caprylyl glycol

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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
SUNDAY RILEYSaturn Sulfur + Niacinamide Spot TreatmentYOUR PRODUCTKiehl'ss Breakout Control Targeted Blemish Spot TreatmentDermalogicaDeep Acne Liquid PatchVERSOBlemish Fix by Verso
Match—87%76%70%
Price——$34.00$70.34
Shared key ingredients—2 of 82 of 82 of 8
Key difference—Glycolic AcidLactic AcidRetinyl Retinoate
Irritancy High Low High Medium
Drying alcohol Contains drying alcohol ———
View product Shop Shop Shop

More alternatives: Dr Sebagh Breakout Spot-OnSkinfix Acne+ 2% BHA Spot Treatment

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Product summary

"SUNDAY RILEY - Saturn Sulfur + Niacinamide Spot Treatment" is effective for: Evens skin tone, Anti-blemish, Anti-aging and Moisturizing

Ingredient callouts

  • A good concentration of Niacinamide (2.60% - 3.20%). Niacinamide is a well-studied multi-tasking active. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and improve the skin tone, reducing pigmentation marks.
  • Dipotassium Glycyrrhizate in this product (0.70% - 1.05%) can also further help improve the skin barrier. It might be able to calm down inflammation and reduce sensitivity. Dipotassium Glycyrrhizate is an active compound from the licorice root.
  • In addition, this product contains Allantoin (0.90% - 1.10%). Allantoin is helpful in wound-healing and can help restore the skin barrier faster. It might also be able to improve scars, but the evidence is not very strong for this.
  • Humectants (zinc pca 1.20% - 1.50%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

About the brand

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

Price

The product retails from 23.00£ up to 27.50£ 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 15 studies and safety reviews.

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SUNDAY RILEY Saturn Sulfur + Niacinamide Spot Treatment
SUNDAY RILEYSaturn Sulfur + Niacinamide Spot Treatment

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As an Amazon Associate, WIMJ earns from qualifying purchases.