Shiseido WASO: Hydrating Gel Beauty Sleeping Mask

Shiseido WASO: Hydrating Gel Beauty Sleeping Mask

Efficacy75/100IrritancyHigh

Works for

Moisturizing
Glycerin, Maltitol + 10 more
Works
What the product description says
“Hydrating Gel Beauty Sleeping Mask”
From product name

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, saccharide isomerate.

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: dimethicone, carthamus tinctorius seed oil.

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~4.1–5%
MaltitolKey active· HumectantEffect: MediumHelps attract water to the upper layer of the skin~1.9–2.3%
DimethiconeKey active· Emollient, OcclusiveEffect: HighA silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish~1.7–2.1%
TrehaloseKey active· HumectantEffect: HighA sugar that attracts water to the upper layer of the skin~1.4–1.7%
Saccharide isomerateKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin~0.3–0.55%
Carthamus tinctorius seed oilKey active· EmollientEffect: HighAn emollient that helps soften the skin and might help calm down inflammation~0.2–0.4%
SerineKey activeEffect: HighAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.15–0.3%
Plankton extractKey activeEffect: MediumCan help attract water to the upper layer of the skin~0.1–0.2%
Pentaerythrityl tetraethylhexanoate· EmollientEffect: LowUsed to create a nice product consistency while softening the upper layer of the skin~2.4–2.9%
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~0.2–0.35%
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~0.05–0.15%
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~0.25–0.45%
Anti-aging
Side benefit · Serine, Tocopherol
May help

This product contains serine. This ingredient might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.

SerineKey activeEffect: MediumAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.15–0.3%
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~0.05–0.15%

Can it cause trouble?

Irritancy
10 strong irritants: Alcohol, Parfum + 8 more — patch-test recommended
High risk
We flagged 22 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
AlcoholCan be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial propertiesHigh~3.1–3.8%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.3–0.6%est.
Butylphenyl methylpropionalA fragrance. Can trigger allergic reactions and be irritatingHigh~0.15–0.3%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.15–0.3%est.
Hexyl cinnamalA fragrance with jasmine smell. A likely irritantHigh~0.15–0.3%est.
LinaloolA fragrance. Can be irritatingHigh~0.15–0.3%est.
Benzyl benzoateFragrance with sweet balsamic smell. Help to preserve products and dissolve other ingredients. Could trigger allergic reactions and be irritatingHigh~0.15–0.3%est.
CitronellolA fragrance. Can be irritatingHigh~0.15–0.3%est.
Paeonia suffruticosa root extract—High~0.15–0.3%est.
GeraniolA fragrance. Can be irritatingHigh~0.15–0.3%est.
Citrus junos seed extract—High~0.15–0.3%est.
Panax ginseng root extractA plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritatingHigh~0.15–0.3%est.
Peg-240/hdi copolymer bis-decyltetradeceth-20 etherHelps create a gel-like product textureMedium~0.5–0.7%est.
Potassium hydroxideUsed to adjust the pH level of productsMedium~0.3–0.6%est.
Dextrin palmitateHelps water and oil mix togetherMedium~0.25–0.5%est.
Sodium metaphosphateA preservativeMedium~0.2–0.4%est.
Disodium edtaStabilizes the product formulationMedium~0.2–0.35%est.
Acrylates/c10-30 alkyl acrylate crosspolymerMaintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix togetherMedium~0.2–0.4%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.2–0.35%est.
Sodium citrateHelps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve productsMedium~0.15–0.3%est.
BhtA preservativeMedium~0.1–0.2%est.
Plankton extractCan help attract water to the upper layer of the skinMedium~0.1–0.2%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
Plankton extractCan help attract water to the upper layer of the skin3/5~0.1–0.2%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
Dipropylene glycol~6.6–8.1%
Formula
Irritation risk
Low

Helps to dissolve other ingredients in a formulation. Slows down the rate of product drying

More about Dipropylene glycol
Glycerin~4.1–5%
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
Alcohol~3.1–3.8%
Irritant · high
Irritation risk
High
Works for
Antibacterial

Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties

More about Alcohol
Pentaerythrityl tetraethylhexanoate~2.4–2.9%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product consistency while softening the upper layer of the skin

More about Pentaerythrityl tetraethylhexanoate
Maltitol~1.9–2.3%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin

More about Maltitol
Dimethicone~1.7–2.1%
Key active
Irritation risk
Low
Works for
MoisturizingMattifying

A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish

More about Dimethicone
Trehalose~1.4–1.7%
Key active
Irritation risk
Low
Works for
Moisturizing

A sugar that attracts water to the upper layer of the skin

More about Trehalose
Euphorbia cerifera wax~1.3–1.6%
Formula
Candelilla cera~0.95–1.15%
Formula
Phenoxyethanol~0.55–0.8%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Peg-240/hdi copolymer bis-decyltetradeceth-20 ether~0.5–0.7%
Irritant · medium
Irritation risk
Medium

Helps create a gel-like product texture

More about Peg-240/hdi copolymer bis-decyltetradeceth-20 ether
Carbomer~0.45–0.65%
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
Parfum~0.3–0.6%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Potassium hydroxide~0.3–0.6%
Irritant · medium
Irritation risk
Medium

Used to adjust the pH level of products

More about Potassium hydroxide
Saccharide isomerate~0.3–0.55%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin

More about Saccharide isomerate
Talc~0.5–0.75%
Formula
Irritation risk
Low

Absorbs oil and moisture helping to create a dryer product finish

More about Talc
Dipotassium glycyrrhizate~0.25–0.45%
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
Dextrin palmitate~0.25–0.5%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Dextrin palmitate
Sodium metaphosphate~0.2–0.4%
Irritant · medium
Irritation risk
Medium

A preservative

More about Sodium metaphosphate
Butylene glycol~0.2–0.35%
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
Disodium edta~0.2–0.35%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Acrylates/c10-30 alkyl acrylate crosspolymer~0.2–0.4%
Irritant · medium
Irritation risk
Medium

Maintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix together

More about Acrylates/c10-30 alkyl acrylate crosspolymer
Carthamus tinctorius seed oil~0.2–0.4%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidation

An emollient that helps soften the skin and might help calm down inflammation

More about Carthamus tinctorius seed oil
Serine~0.15–0.3%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-aging

An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles

More about Serine
Butylphenyl methylpropional~0.15–0.3%
Irritant · high
Irritation risk
High

A fragrance. Can trigger allergic reactions and be irritating

More about Butylphenyl methylpropional
Limonene~0.15–0.3%
Irritant · high
Irritation risk
High

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

More about Limonene
Hexyl cinnamal~0.15–0.3%
Irritant · high
Irritation risk
High

A fragrance with jasmine smell. A likely irritant

More about Hexyl cinnamal
Linalool~0.15–0.3%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Benzyl benzoate~0.15–0.3%
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
Calcium stearate~0.2–0.35%
Formula
Iron oxides~0.15–0.3%
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
Ci 77492~0.2–0.35%
Formula
Irritation risk
Low

A colorant. Usually well-tolerated

More about Ci 77492
Citric acid~0.2–0.35%
Irritant · medium
Irritation risk
Medium

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

More about Citric acid
Sodium citrate~0.15–0.3%
Irritant · medium
Irritation risk
Medium

Helps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve products

More about Sodium citrate
Citronellol~0.15–0.3%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Citronellol
Paeonia suffruticosa root extract~0.15–0.3%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation
More about Paeonia suffruticosa root extract
Geraniol~0.15–0.3%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Geraniol
Daucus carota sativa root protoplasts~0.2–0.35%
Formula
Citrus junos seed extract~0.15–0.3%
Irritant · high
Peg-30 phytosterol~0.2–0.35%
Formula
Irritation risk
Low
Works for
Cleansing
More about Peg-30 phytosterol
Hydrogenated lecithin~0.15–0.3%
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
Triisostearin~0.15–0.25%
Formula
Irritation risk
Low
More about Triisostearin
Panax ginseng root extract~0.15–0.3%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatoryAnti-oxidation

A plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating

More about Panax ginseng root extract
Bht~0.1–0.2%
Irritant · medium
Irritation risk
Medium

A preservative

More about Bht
Trimethylolpropane triethylhexanoate~0.1–0.25%
Formula
Plankton extract~0.1–0.2%
Key activeComedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5
Works for
Moisturizing

Can help attract water to the upper layer of the skin

More about Plankton extract
Sodium phosphate~0.1–0.2%
Formula
Irritation risk
Low

Helps stabilize the product formulation

More about Sodium phosphate
Trisodium edta~0.1–0.2%
Formula
Irritation risk
Low

Helps preserve product formulations

More about Trisodium edta
Polysilicone-2~0.1–0.15%
Formula
Irritation risk
Low
More about Polysilicone-2
Tocopherol~0.05–0.15%
Formula
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
Ingredient list view

Water, Dipropylene glycol, Glycerin, Alcohol, Pentaerythrityl tetraethylhexanoate, Maltitol, Dimethicone, Trehalose, Euphorbia cerifera wax, Candelilla cera, Phenoxyethanol, Peg-240/hdi copolymer bis-decyltetradeceth-20 ether, Carbomer, Parfum, Potassium hydroxide, Saccharide isomerate, Talc, Dipotassium glycyrrhizate, Dextrin palmitate, Sodium metaphosphate, Butylene glycol, Disodium edta, Acrylates/c10-30 alkyl acrylate crosspolymer, Carthamus tinctorius seed oil, Serine, Butylphenyl methylpropional, Limonene, Hexyl cinnamal, Linalool, Benzyl benzoate, Calcium stearate, Iron oxides, Ci 77492, Citric acid, Sodium citrate, Citronellol, Paeonia suffruticosa root extract, Geraniol, Daucus carota sativa root protoplasts, Citrus junos seed extract, Peg-30 phytosterol, Hydrogenated lecithin, Triisostearin, Panax ginseng root extract, Bht, Trimethylolpropane triethylhexanoate, Plankton extract, Sodium phosphate, Trisodium edta, Polysilicone-2, Tocopherol

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🇬🇧 Amazon UK (UK)Price as of 11/4 03:00 GMT
≈ $35.91
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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
ShiseidoWASO: Hydrating Gel Beauty Sleeping MaskYOUR PRODUCTAxxziaAGtheory Gel MaskGLAMGLOWBRIGHT BETWEEN THE GIRLS Instant Radiance Hydrating Décolleté MaskALFACE+Platinum Moisture Mask 1 pc
Match—41%39%39%
Price—$80.80—$6.41
Shared key ingredients—3 of 74 of 75 of 7
Key difference——PanthenolAdenosine
Irritancy High Medium Medium Medium
Drying alcohol Contains drying alcohol Contains 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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Shiseido WASO: Hydrating Gel Beauty Sleeping Mask
ShiseidoWASO: Hydrating Gel Beauty Sleeping Mask

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

As an Amazon Associate, WIMJ earns from qualifying purchases.