Thalgo Hydra Marine Serum

Thalgo Hydra Marine Serum

Efficacy75/100IrritancyHigh

Works for

Moisturizing
Thermus thermophillus ferment, Glycerin + 9 more
Works
What the product description says
“Hydra Marine Serum”
From product name

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, hydrolyzed hyaluronic acid.

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).

Thermus thermophillus fermentKey activeEffect: HighMight be helpful in neutralising free radicals in skin and have some hydration properties~3.1–3.8%
GlycerinKey activeEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~2–2.5%
Yeast extractKey activeEffect: HighHelps attract water to the upper layer of the skin and might have some anti-oxidant and skin lightening properties. It can help calm down inflammation in skin~1.6–1.9%
Hydrolyzed hyaluronic acidKey activeEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin. A version of it is naturally present in skin~0.6–0.95%
Peg-8 dimethiconeEffect: LowA type of silicone that can help create nice product texture and soften the upper layer of the skin~4.2–5.2%
Oleic acidEffect: LowHelps soften the upper layer of the skin. At the same time, it can weaken the skin's barrier enhancing penetration of other ingredients and increasing the risk of skin dryness~0.55–0.8%
Caprylyl glycolEffect: LowHelps preserve products and creates a nice product texture~0.25–0.45%
Glyceryl caprylateEffect: LowAn emollient that can also help water and oil mix together, as well as prevent bacteria growth in products~0.25–0.5%
SorbitolEffect: LowHelps attract water to the upper layer of the skin and improves the product texture~0.25–0.45%
LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.45–0.65%
Hydrolyzed viola tricolor extractUnder-dosedMight have some moisturizing and anti-inflammatory properties. Can be added to products to create a nice smell.~1.4–1.7%
Anti-oxidation
Side benefit · Yeast extract, Thermus thermophillus ferment
May help

This product contains antioxidants (yeast extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Yeast extractKey activeEffect: MediumHelps attract water to the upper layer of the skin and might have some anti-oxidant and skin lightening properties. It can help calm down inflammation in skin~1.6–1.9%
Thermus thermophillus fermentEffect: LowMight be helpful in neutralising free radicals in skin and have some hydration properties~3.1–3.8%

Can it cause trouble?

Irritancy
8 strong irritants: Hydrolyzed viola tricolor extract, Parfum + 6 more — patch-test recommended
High risk
We flagged 19 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Hydrolyzed viola tricolor extractMight have some moisturizing and anti-inflammatory properties. Can be added to products to create a nice smell.High~1.4–1.7%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.35–0.6%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~0.3–0.6%est.
PhenylpropanolHelps mask the smell of other ingredients and helps preserve the product formulationHigh~0.2–0.35%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.1–0.2%est.
LinaloolA fragrance. Can be irritatingHigh~0.1–0.2%est.
Hexyl cinnamalA fragrance with jasmine smell. A likely irritantHigh~0.05–0.1%est.
CitronellolA fragrance. Can be irritatingHigh~0.05%est.
GeraniolA fragrance. Can be irritatingHigh~0.01–0.05%est.
Thermus thermophillus fermentMight be helpful in neutralising free radicals in skin and have some hydration propertiesMedium~3.1–3.8%est.
Ppg-26-buteth-26Helps oil and water mix togetherMedium~1.1–1.4%est.
Oleic acidHelps soften the upper layer of the skin. At the same time, it can weaken the skin's barrier enhancing penetration of other ingredients and increasing the risk of skin drynessMedium~0.55–0.8%est.
Peg-40 hydrogenated castor oilHelps oil and water mix togetherMedium~0.45–0.7%est.
ChlorphenesinA preservativeMedium~0.16–0.32%est.
EthylhexylglycerinA preservativeMedium~0.25–0.45%est.
Caprylyl glycolHelps preserve products and creates a nice product textureMedium~0.25–0.45%est.
Potassium sorbateA preservativeMedium~0.25–0.45%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.2–0.35%est.
Ci 42090A colorant (dye)Medium~0.2–0.35%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
Glycereth-26~5.8–7%
Formula
Irritation risk
Low

Helps create a thicker product consistency

More about Glycereth-26
Peg-8 dimethicone~4.2–5.2%
Formula
Irritation risk
Low
Works for
Moisturizing

A type of silicone that can help create nice product texture and soften the upper layer of the skin

More about Peg-8 dimethicone
Thermus thermophillus ferment~3.1–3.8%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-agingAnti-oxidation

Might be helpful in neutralising free radicals in skin and have some hydration properties

More about Thermus thermophillus ferment
Maris aqua~2.4–2.9%
Formula
Irritation risk
Low

Sea water. Helps dissolve other ingredients in a product

More about Maris aqua
Glycerin~2–2.5%
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
Yeast extract~1.6–1.9%
Key active
Irritation risk
Low
Works for
MoisturizingReduces irritationAnti-inflammatoryAnti-oxidationEvens skin tone

Helps attract water to the upper layer of the skin and might have some anti-oxidant and skin lightening properties. It can help calm down inflammation in skin

More about Yeast extract
Hydrolyzed viola tricolor extract~1.4–1.7%
Under-dosedIrritant · high
Irritation risk
High
Works for
Moisturizing

Might have some moisturizing and anti-inflammatory properties. Can be added to products to create a nice smell.

More about Hydrolyzed viola tricolor extract
Ppg-26-buteth-26~1.1–1.4%
Irritant · medium
Irritation risk
Medium

Helps oil and water mix together

More about Ppg-26-buteth-26
Phenoxyethanol~0.5–1%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Hydrolyzed hyaluronic acid~0.6–0.95%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin. A version of it is naturally present in skin

More about Hydrolyzed hyaluronic acid
Hydrolyzed beta-glucan~0.5–0.8%
Formula
Oleic acid~0.55–0.8%
Irritant · medium
Irritation risk
Medium
Works for
CleansingAnti-inflammatoryMoisturizing

Helps soften the upper layer of the skin. At the same time, it can weaken the skin's barrier enhancing penetration of other ingredients and increasing the risk of skin dryness

More about Oleic acid
Peg-40 hydrogenated castor oil~0.45–0.7%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Peg-40 hydrogenated castor oil
Carbomer~0.4–0.6%
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~0.35–0.6%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Lecithin~0.45–0.65%
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
Alcohol~0.3–0.6%
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
Chlorphenesin~0.16–0.32%
Irritant · medium
Irritation risk
Medium

A preservative

More about Chlorphenesin
Sodium hydroxide~0.25–0.5%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Xanthan gum~0.25–0.5%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a thicker product consistency

More about Xanthan gum
Ethylhexylglycerin~0.25–0.45%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Sorbitol~0.25–0.45%
Formula
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and improves the product texture

More about Sorbitol
Caprylyl glycol~0.25–0.45%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps preserve products and creates a nice product texture

More about Caprylyl glycol
Potassium sorbate~0.25–0.45%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Sodium benzoate~0.2–0.4%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Glyceryl caprylate~0.25–0.5%
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
Phenylpropanol~0.2–0.35%
Irritant · high
Irritation risk
High

Helps mask the smell of other ingredients and helps preserve the product formulation

More about Phenylpropanol
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
Ci 42090~0.2–0.35%
Irritant · medium
Irritation risk
Medium

A colorant (dye)

More about Ci 42090
Ci 77491~0.15–0.3%
Formula
Irritation risk
Low

A red colorant made of iron oxide. Typically is not irritating

More about Ci 77491
Limonene~0.1–0.2%
Irritant · high
Irritation risk
High

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

More about Limonene
Linalool~0.1–0.2%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

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

A fragrance with jasmine smell. A likely irritant

More about Hexyl cinnamal
Citronellol~0.05%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Citronellol
Geraniol~0.01–0.05%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Geraniol
Ingredient list view

Water, Glycereth-26, Peg-8 dimethicone, Thermus thermophillus ferment, Maris aqua, Glycerin, Yeast extract, Hydrolyzed viola tricolor extract, Ppg-26-buteth-26, Phenoxyethanol, Hydrolyzed hyaluronic acid, Hydrolyzed beta-glucan, Oleic acid, Peg-40 hydrogenated castor oil, Carbomer, Parfum, Lecithin, Alcohol, Chlorphenesin, Sodium hydroxide, Xanthan gum, Ethylhexylglycerin, Sorbitol, Caprylyl glycol, Potassium sorbate, Sodium benzoate, Glyceryl caprylate, Phenylpropanol, Citric acid, Ci 42090, Ci 77491, Limonene, Linalool, Hexyl cinnamal, Citronellol, Geraniol

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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
ThalgoHydra Marine SerumYOUR PRODUCTVeracovaHydration Serum Intense ActionMEDI-PEELDerma Maison Vitabenone Brightening SerumBYROEBELL PEPPER SERUM
Match—39%39%38%
Price————
Shared key ingredients—2 of 42 of 42 of 4
Key difference—BetaineNiacinamidePanthenol
Irritancy High Medium Medium Medium
Drying alcohol Contains drying alcohol ———
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