Ren Skincare Flash Defence Anti Pollution Mist

Ren Skincare Flash Defence Anti Pollution Mist

Efficacy0/100IrritancyHigh

Works for

Anti-aging
Lactic acid ~1.9–2.3%, below the ~2% it needs
Under-dosed
What the product description says
“Regular use of the mist helps to reduce the premature aging effect of environmental pollution.”
Source: Bluemercury

Effective ingredients missing or their concentration is too low.

Lactic acidUnder-dosedAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~1.9–2.3%
Moisturizing
Lactic acid ~1.9–2.3%, below the ~2% it needs
Under-dosed
What the product description says
“Increases moisture retention following UV exposure.”
Source: Bluemercury

Does not contain good ingredients to help with moisturization.

Undaria pinnatifida extractEffect: HighA seaweed extract that helps attract water to the upper layer of the skin and might have an anti-oxidant effect~9.2–11.3%
Glyceryl caprylate· EmollientEffect: LowAn emollient that can also help water and oil mix together, as well as prevent bacteria growth in products~0.8–1.2%
Lactic acidUnder-dosedAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~1.9–2.3%

Can it cause trouble?

Irritancy
5 strong irritants: Parfum, Sodium hydroxymethylglycinate + 3 more — patch-test recommended
High risk
We flagged 11 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~1.5–1.8%est.
Sodium hydroxymethylglycinateA preservative. Can be irritatingHigh~0.25–0.5%est.
Benzyl salicylateA fragrance. Is a likely irritantHigh~0.1–0.2%est.
CitronellolA fragrance. Can be irritatingHigh~0.1–0.15%est.
LinaloolA fragrance. Can be irritatingHigh~0.05–0.1%est.
Caprylyl/capryl glucosideHelps oil and water mix together. Can be used as a cleansing agentMedium~4.2–5.1%est.
Lactic acidAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)Medium~1.9–2.3%est.
Sodium cocoyl glutamateHelps oil and water mix togetherMedium~1.3–1.5%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.65–0.95%est.
Potassium sorbateA preservativeMedium~0.2–0.35%est.
EthylhexylglycerinA preservativeMedium~0.15–0.3%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

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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
Undaria pinnatifida extract~9.2–11.3%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidation

A seaweed extract that helps attract water to the upper layer of the skin and might have an anti-oxidant effect

More about Undaria pinnatifida extract
Propanediol~4.2–5.1%
Formula
Irritation risk
Low

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

More about Propanediol
Caprylyl/capryl glucoside~4.2–5.1%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together. Can be used as a cleansing agent

More about Caprylyl/capryl glucoside
Hydrolyzed candida saitoana extract~2.3–2.9%
Formula
Lactic acid~1.9–2.3%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
MoisturizingEvens skin toneExfoliationAnti-aging

An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)

More about Lactic acid
Parfum~1.5–1.8%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Polyglyceryl-5 oleate~1.4–1.8%
Formula
Irritation risk
Low
Works for
Cleansing
More about Polyglyceryl-5 oleate
Sodium cocoyl glutamate~1.3–1.5%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Sodium cocoyl glutamate
Biosaccharide gum-4~1–1.3%
Formula
Irritation risk
Low

Helps improve the product texture

More about Biosaccharide gum-4
Glyceryl caprylate~0.8–1.2%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that can also help water and oil mix together, as well as prevent bacteria growth in products

More about Glyceryl caprylate
Citric acid~0.65–0.95%
Irritant · medium
Irritation risk
Medium

Can work as an exfoliant but is typically used to adjust the product pH

More about Citric acid
Phenoxyethanol~0.5–0.75%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Sophora japonica flower extract~0.45–0.7%
Formula
Sodium hydroxymethylglycinate~0.25–0.5%
Irritant · high
Irritation risk
High

A preservative. Can be irritating

More about Sodium hydroxymethylglycinate
Sodium benzoate~0.25–0.5%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Potassium sorbate~0.2–0.35%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Ethylhexylglycerin~0.15–0.3%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Benzyl salicylate~0.1–0.2%
Irritant · high
Irritation risk
High

A fragrance. Is a likely irritant

More about Benzyl salicylate
Citronellol~0.1–0.15%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Citronellol
Linalool~0.05–0.1%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Parfum~0.05%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Ingredient list view

Water, Undaria pinnatifida extract, Propanediol, Caprylyl/capryl glucoside, Hydrolyzed candida saitoana extract, Lactic acid, Parfum, Polyglyceryl-5 oleate, Sodium cocoyl glutamate, Biosaccharide gum-4, Glyceryl caprylate, Citric acid, Phenoxyethanol, Sophora japonica flower extract, Sodium hydroxymethylglycinate, Sodium benzoate, Potassium sorbate, Ethylhexylglycerin, Benzyl salicylate, Citronellol, Linalool, Parfum

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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
Ren SkincareFlash Defence Anti Pollution MistYOUR PRODUCTYes toGrapefruit Vitamin C Glow Boosting Unicorn Brightening MistEucerinDermo Purifyer Oil Control TonerRohto MentholatumObagi Peeling V10 Essence
Match—54%52%51%
Price———$66.33
Shared key ingredients—1 of 21 of 21 of 2
Key difference—Niacinamide—Mineral Oil
Irritancy High High Medium Medium
Drying alcohol—— Contains drying alcohol —
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 4 studies and safety reviews.

  1. 1
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  4. 4
Ren Skincare Flash Defence Anti Pollution Mist
Ren SkincareFlash Defence Anti Pollution Mist

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As an Amazon Associate, WIMJ earns from qualifying purchases.