RENU Flash Relax Mask

RENU Flash Relax Mask

Efficacy100/100IrritancyHigh

Works for

Moisturizing
Panthenol, Glycerin + 7 more
Works well
What the product description says
“A wonderful multi-tasker, this fabulous mask will also intensively hydrate your skin to keep it feeling soft and supple.”
Source: Recreate Yourself

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: algae extract, biosaccharide gum-1.

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: algae extract.

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

PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.1–0.4%
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~3.7–5.6%
Biosaccharide gum-1Key active· HumectantEffect: HighHelps attract water to the upper layer of the skin and is claimed to provide a longer-lasting hydration because of its ability to create a water-binding film on the surface of the skin~2.7–4.1%
Glyceryl acrylate/acrylic acid copolymerKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency~0.5–1.15%
Algae extractKey active· Humectant, EmollientEffect: HighPlant extract that helps the skin to attract water and make it more smooth for touch. Also shows promise of anti-aging properties, but research is not extensive yet~0.4–0.95%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.1–0.35%
Vitis vinifera fruit extractKey activeEffect: MediumA plant extract that helps attract water to the upper layer of the skin. It might be helpful in neutralizing free radicals in skin, but is less potent than the extract from the seeds~0.1–0.35%
Aloe barbadensis leaf juice· HumectantEffect: LowTraditionally 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~6.3–9.5%
Magnesium gluconateEffect: LowA mineral that might be able to support skin hydration, but convincing research on its effectiveness in topical skincare is lacking~0.4–0.9%

Can it cause trouble?

Irritancy
7 strong irritants: Parfum, Linalool + 5 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
Acanthopanax senticosus root extractA plant extract that might have antioxidant propertiesHigh~0.85–1.25%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.2–0.75%est.
LinaloolA fragrance. Can be irritatingHigh~0.15–0.7%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.15–0.65%est.
Benzyl benzoateFragrance with sweet balsamic smell. Help to preserve products and dissolve other ingredients. Could trigger allergic reactions and be irritatingHigh~0.15–0.55%est.
FarnesolAdded to create a nice product smell. Can be irritatingHigh~0.1–0.45%est.
GeraniolA fragrance. Can be irritatingHigh~0.1–0.4%est.
Benzyl salicylateA fragrance. Is a likely irritantHigh~0.1–0.4%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~6.3–9.5%est.
Peg-40 hydrogenated castor oilHelps oil and water mix togetherMedium~2–3%est.
TriethanolamineUsed to adjust pH of the product and can help improve the product's smellMedium~1.2–1.8%est.
Sodium ascorbyl phosphateA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin CMedium~0.8–1.25%est.
Glyceryl acrylate/acrylic acid copolymerHelps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistencyMedium~0.5–1.15%est.
Vitis vinifera fruit extractA plant extract that helps attract water to the upper layer of the skin. It might be helpful in neutralizing free radicals in skin, but is less potent than the extract from the seedsMedium~0.1–0.35%est.
Disodium edtaStabilizes the product formulationMedium~0.05–0.25%est.
Potassium sorbateA preservativeMedium~0.05–0.25%est.
EthylhexylglycerinA preservativeMedium~0.05–0.1%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
Algae extractPlant extract that helps the skin to attract water and make it more smooth for touch. Also shows promise of anti-aging properties, but research is not extensive yet3/5~0.4–0.95%est.

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Ingredients

Filter by role to see what each ingredient is doing.

Water~40–60%
Formula
Irritation risk
Low

Plain old water

More about Water
Aloe barbadensis leaf juice~6.3–9.5%
Irritant · medium
Irritation risk
Medium
Works for
MoisturizingReduces rednessReduces irritationAntibacterialAnti-inflammatoryAnti-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
Glycerin~3.7–5.6%
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
Biosaccharide gum-1~2.7–4.1%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and is claimed to provide a longer-lasting hydration because of its ability to create a water-binding film on the surface of the skin

More about Biosaccharide gum-1
Peg-40 hydrogenated castor oil~2–3%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Peg-40 hydrogenated castor oil
Carbomer~1.6–2.4%
Formula
Irritation risk
Low
Works for
Cleansing

Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations

More about Carbomer
Phenoxyethanol~0.5–1%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Triethanolamine~1.2–1.8%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Used to adjust pH of the product and can help improve the product's smell

More about Triethanolamine
Acanthopanax senticosus root extract~0.85–1.25%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation

A plant extract that might have antioxidant properties

More about Acanthopanax senticosus root extract
Sodium ascorbyl phosphate~0.8–1.25%
Irritant · medium
Irritation risk
Medium
Works for
Anti-blemishAnti-oxidationAnti-aging

A stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C

More about Sodium ascorbyl phosphate
Glyceryl acrylate/acrylic acid copolymer~0.5–1.15%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency

More about Glyceryl acrylate/acrylic acid copolymer
Magnesium gluconate~0.4–0.9%
Formula
Irritation risk
Low
Works for
Moisturizing

A mineral that might be able to support skin hydration, but convincing research on its effectiveness in topical skincare is lacking

More about Magnesium gluconate
Algae extract~0.4–0.95%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-aging

Plant extract that helps the skin to attract water and make it more smooth for touch. Also shows promise of anti-aging properties, but research is not extensive yet

More about Algae extract
Cichorium intybus extract~0.3–0.75%
Formula
Maltose~0.2–0.75%
Formula
Irritation risk
Low
More about Maltose
Parfum~0.2–0.75%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Linalool~0.15–0.7%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Limonene~0.15–0.65%
Irritant · high
Irritation risk
High

A common frangrance that can easily irritate skin, especially if exposed to air, light or heat

More about Limonene
Benzyl benzoate~0.15–0.55%
Irritant · high
Irritation risk
High

Fragrance with sweet balsamic smell. Help to preserve products and dissolve other ingredients. Could trigger allergic reactions and be irritating

More about Benzyl benzoate
Farnesol~0.1–0.45%
Irritant · high
Irritation risk
High

Added to create a nice product smell. Can be irritating

More about Farnesol
Geraniol~0.1–0.4%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Geraniol
Benzyl salicylate~0.1–0.4%
Irritant · high
Irritation risk
High

A fragrance. Is a likely irritant

More about Benzyl salicylate
Panthenol~0.1–0.4%
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
Sodium hyaluronate~0.1–0.35%
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
Vitis vinifera fruit extract~0.1–0.35%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-oxidation

A plant extract that helps attract water to the upper layer of the skin. It might be helpful in neutralizing free radicals in skin, but is less potent than the extract from the seeds

More about Vitis vinifera fruit extract
Disodium edta~0.05–0.25%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Trideceth-9~0.05–0.25%
Formula
Irritation risk
Low
Works for
Cleansing
More about Trideceth-9
Potassium sorbate~0.05–0.25%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Ethylhexylglycerin~0.05–0.1%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Ingredient list view

Water, Aloe barbadensis leaf juice, Glycerin, Biosaccharide gum-1, Peg-40 hydrogenated castor oil, Carbomer, Phenoxyethanol, Triethanolamine, Acanthopanax senticosus root extract, Sodium ascorbyl phosphate, Glyceryl acrylate/acrylic acid copolymer, Magnesium gluconate, Algae extract, Cichorium intybus extract, Maltose, Parfum, Linalool, Limonene, Benzyl benzoate, Farnesol, Geraniol, Benzyl salicylate, Panthenol, Sodium hyaluronate, Vitis vinifera fruit extract, Disodium edta, Trideceth-9, Potassium sorbate, Ethylhexylglycerin

Compare prices

Retailers ranked by price — lowest first.

🇦🇺 Recreate Yourself (AU)100 ml
≈ $33.47 Out of stock
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🇬🇧 Amazon UK (UK)Price as of 11/1 03:42 GMT
≈ $53.54
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🇦🇺 Amazon Australia (AU)
Price unavailable Out of stock
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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
RENUFlash Relax MaskYOUR PRODUCTJAYJUNMulti-Vita Tone Up MaskMEDIHEALCollagen Impact Essential MaskULTAWatermelon Sleeping Mask
Match—61%56%56%
Price————
Shared key ingredients—3 of 73 of 73 of 7
Key difference—NiacinamideAcetyl Hexapeptide-8Anhydroxylitol
Irritancy High Medium Medium High
Drying alcohol————
View product Shop Shop Shop

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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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RENU Flash Relax Mask
RENUFlash Relax Mask

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

As an Amazon Associate, WIMJ earns from qualifying purchases.