Tatcha The Water Cream Duo

Tatcha The Water Cream Duo

Efficacy37/100IrritancyHigh
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Works for

1 of 2 advertised claims delivered

Moisturizing
7 ingredients credited for this claim
Good support
What the product description says
“Featuring Uji Green Tea (known to detoxify and help prevent signs of premature aging), Okinawa Red Algae (rich in polysaccharides, essential for skin water retention and renewal), and Akita Rice (a nourishing moisturizer, rich in essential proteins).”
Source: Tatcha

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: diglycerin, 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: dimethicone.

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~3.1–3.8%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.65–1%
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~5.7–7%
DiglycerinKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin~2.6–3.1%
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~0.15–0.3%
Diphenylsiloxy phenyl trimethiconeEffect: LowHelp improve the product's texture~2.3–2.8%
LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.65–0.95%
Anti-aging
No ingredient credited for this claim
No support
What the product description says
“Featuring Uji Green Tea (known to detoxify and help prevent signs of premature aging), Okinawa Red Algae (rich in polysaccharides, essential for skin water retention and renewal), and Akita Rice (a nourishing moisturizer, rich in essential proteins).”
Source: Tatcha

Effective ingredients missing or their concentration is too low.

Can it cause trouble?

Irritancy
3 strong irritants: Rosa multiflora fruit extract, Parfum + 1 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
Rosa multiflora fruit extractUsed in cosmetics for its fragranceHigh~1.1–1.4%est.
Sophora angustifolia root extract—High~0.7–1.05%est.
Pistacia lentiscus gumA tree rasin that could temporarily tighten the skin and might help regulate sebum production, but the research on its effectiveness in skin is lackingHigh~0.6–0.9%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.1–0.2%est.
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~0.1–0.15%est.
GoldA colorant. Does not have any proven benefits in skinMedium~1.9–2.4%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~0.55–0.85%est.
Peg-9 polydimethylsiloxyethyl dimethiconeA type of silicone that helps water and oil mix togetherMedium~0.5–0.75%est.
Dimethicone/peg-10/15 crosspolymerHelps oil and water mix togetherMedium~0.35–0.6%est.
Disodium edtaStabilizes the product formulationMedium~0.3–0.5%est.
EthylhexylglycerinA preservativeMedium~0.15–0.25%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
Saccharomyces/camellia sinensis leaf/cladosiphon okamuranus/rice ferment filtrate~12–14%
Formula
Dimethicone~5.7–7%
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
Propanediol~3.7–4.5%
Formula
Irritation risk
Low

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

More about Propanediol
Glycerin~3.1–3.8%
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
Diglycerin~2.6–3.1%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin

More about Diglycerin
Diphenylsiloxy phenyl trimethicone~2.3–2.8%
Formula
Irritation risk
Low
Works for
Moisturizing

Help improve the product's texture

More about Diphenylsiloxy phenyl trimethicone
Gold~1.9–2.4%
Irritant · medium
Irritation risk
Medium

A colorant. Does not have any proven benefits in skin

More about Gold
Belamcanda chinensis root extract~1.4–1.7%
Formula
Rosa multiflora fruit extract~1.1–1.4%
Irritant · high
Irritation risk
High

Used in cosmetics for its fragrance

More about Rosa multiflora fruit extract
Houttuynia cordata extract~0.8–1.15%
Formula
Sophora angustifolia root extract~0.7–1.05%
Irritant · high
Sodium hyaluronate~0.65–1%
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
Lecithin~0.65–0.95%
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
Pistacia lentiscus gum~0.6–0.9%
Irritant · high
Irritation risk
High
Works for
Anti-blemish

A tree rasin that could temporarily tighten the skin and might help regulate sebum production, but the research on its effectiveness in skin is lacking

More about Pistacia lentiscus gum
Sodium chloride~0.6–0.9%
Formula
Irritation risk
Low

Used to stabilize mixtures of oil and water, and create thicker, gel-like product textures

More about Sodium chloride
Sodium citrate~0.55–0.85%
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
Mica~0.55–0.8%
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
Peg-9 polydimethylsiloxyethyl dimethicone~0.5–0.75%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

A type of silicone that helps water and oil mix together

More about Peg-9 polydimethylsiloxyethyl dimethicone
Dimethicone/peg-10/15 crosspolymer~0.35–0.6%
Irritant · medium
Irritation risk
Medium

Helps oil and water mix together

More about Dimethicone/peg-10/15 crosspolymer
Dimethicone/phenyl vinyl dimethicone crosspolymer~0.3–0.55%
Formula
Disodium edta~0.3–0.5%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Tin oxide~0.45–0.7%
Formula
Irritation risk
Low

A colorant that can add a pearl-like appearance to the formulation

More about Tin oxide
Titanium dioxide~0.35–0.65%
Formula
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
Butylene glycol~0.15–0.3%
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
Ethylhexylglycerin~0.15–0.25%
Irritant · medium
Irritation risk
Medium

A preservative

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

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Alcohol~0.1–0.15%
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
Phenoxyethanol~0.1–0.2%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Ingredient list view

Water, Saccharomyces/camellia sinensis leaf/cladosiphon okamuranus/rice ferment filtrate, Dimethicone, Propanediol, Glycerin, Diglycerin, Diphenylsiloxy phenyl trimethicone, Gold, Belamcanda chinensis root extract, Rosa multiflora fruit extract, Houttuynia cordata extract, Sophora angustifolia root extract, Sodium hyaluronate, Lecithin, Pistacia lentiscus gum, Sodium chloride, Sodium citrate, Mica, Peg-9 polydimethylsiloxyethyl dimethicone, Dimethicone/peg-10/15 crosspolymer, Dimethicone/phenyl vinyl dimethicone crosspolymer, Disodium edta, Tin oxide, Titanium dioxide, Butylene glycol, Ethylhexylglycerin, Parfum, Alcohol, Phenoxyethanol

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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 7 studies and safety reviews.

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Tatcha The Water Cream Duo
TatchaThe Water Cream Duo

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