What's In My Jar
BIOTHERM AQUASOURCE NIGHT SPA
BIOTHERM

BIOTHERM AQUASOURCE NIGHT SPA

Efficacy100/100IrritancyHigh
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Works for

1 of 1 advertised claim delivered

Moisturizing
15 ingredients credited for this claim
Strong support
What the product description says
“Embrace the night with Biotherm's sleeping pack, for moisture replenishment and intense skin hydration overnight.”
Source: Biotherm CA

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, butylene glycol.

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, glycine soja oil.

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

Alteromonas ferment extractKey activeEffect: HighA marine extract that helps attract water to the upper layer of the skin. It is claimed to have anti-inflammatory properties but research is lacking~0.15–0.3%
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~6.2–7.6%
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~3.2–3.9%
Glycine soja oilKey active· EmollientEffect: HighA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.~0.25–0.5%
Hydroxypalmitoyl sphinganineHeroEffect: HighA type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin~0.15–0.25%
Isocetyl stearateKey active· EmollientEffect: HighAn emollient that helps soften the skin~2.5–3%
Cetyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~0.65–0.95%
Isononyl isononanoate· Emollient, OcclusiveEffect: LowForms a protective film on the surface of the skin to prevent moisture loss. Gives a velvety feel to products while reducing tackiness~1.8–2.2%
Stearyl heptanoate· EmollientEffect: Low~1–1.2%
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~1.2–1.5%
Palmitic acid· EmollientEffect: LowAn emollient that is naturally present in skin and helps soften it~0.4–0.6%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~1.5–1.9%
Myristyl alcohol· EmollientEffect: LowHelps to stabilize the product formulation while softening the upper layer of the skin. Can be irritating~0.25–0.5%
Stearic acidEffect: Low, below effective doseHelps oil and water mix together and works as an emollient~0.6–0.9%
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~0.25–0.5%

Can it cause trouble?

Irritancy
7 strong irritants: Alcohol denat., Limonene + 5 more — patch-test recommended
High risk
We flagged 16 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Alcohol denat.Produces temporary toning effect. Can help dissolve other ingredients or preserve productsHigh~4.6–5.6%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.25–0.5%est.
Myristyl alcoholHelps to stabilize the product formulation while softening the upper layer of the skin. Can be irritatingHigh~0.25–0.5%est.
Benzyl salicylateA fragrance. Is a likely irritantHigh~0.2–0.35%est.
LinaloolA fragrance. Can be irritatingHigh~0.2–0.35%est.
Benzyl alcoholA preservative. Can be used to mask unpleasant smell. Can be irritatingHigh~0.1–0.25%est.
CitralA fragrance with a lemon scent. A likely irritantHigh~0.1–0.2%est.
GeraniolA fragrance. Can be irritatingHigh~0.1–0.15%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.05–0.1%est.
Polyglyceryl-2 stearateHelps water and oil mix togetherMedium~2–2.5%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~1.5–1.9%est.
Peg-8 stearateHelps water and oil mix togetherMedium~0.7–1.05%est.
Hydroxypropyl starch phosphateHelps oil and water mix together and used to stabilize product formulationsMedium~0.55–0.85%est.
Disodium stearoyl glutamateHelps oil and water mix together and workd as a cleanserMedium~0.6–0.9%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.Medium~0.25–0.5%est.
Myristic acidHelps oil and water mix together. Could be comedogenicMedium~0.4–0.6%est.
Comedogenic
4 ingredients rated 2 or more on the 0–5 pore-clogging scale
4 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
Stearyl heptanoate—3/5~1–1.2%est.
Myristic acidHelps oil and water mix together. Could be comedogenic3/5~0.4–0.6%est.
Peg-8 stearateHelps water and oil mix together2/5~0.7–1.05%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.2/5~0.25–0.5%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
Dimethicone~6.2–7.6%
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
Alcohol denat.~4.6–5.6%
Irritant · high
Irritation risk
High

Produces temporary toning effect. Can help dissolve other ingredients or preserve products

More about Alcohol denat.
Glycerin~3.2–3.9%
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
Isocetyl stearate~2.5–3%
Key active
Irritation risk
Low
Works for
Moisturizing

An emollient that helps soften the skin

More about Isocetyl stearate
Polyglyceryl-2 stearate~2–2.5%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Polyglyceryl-2 stearate
Isononyl isononanoate~1.8–2.2%
Formula
Irritation risk
Low
Works for
Moisturizing

Forms a protective film on the surface of the skin to prevent moisture loss. Gives a velvety feel to products while reducing tackiness

More about Isononyl isononanoate
Pentylene glycol~1.5–1.9%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Butylene glycol~1.2–1.5%
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
Stearyl heptanoate~1–1.2%
Comedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
Moisturizing
More about Stearyl heptanoate
Peg-8 stearate~0.7–1.05%
Comedogenic 2/5Irritant · medium
Irritation risk
Medium
Comedogenicity
2/5
Works for
Cleansing

Helps water and oil mix together

More about Peg-8 stearate
Mannose~0.6–0.85%
Formula
Irritation risk
Low
More about Mannose
Cetyl alcohol~0.65–0.95%
Key active
Irritation risk
Low
Works for
CleansingMoisturizing

A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together

More about Cetyl alcohol
Hydroxypropyl starch phosphate~0.55–0.85%
Irritant · medium
Irritation risk
Medium

Helps oil and water mix together and used to stabilize product formulations

More about Hydroxypropyl starch phosphate
Disodium stearoyl glutamate~0.6–0.9%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together and workd as a cleanser

More about Disodium stearoyl glutamate
Phenoxyethanol~0.45–0.7%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Stearyl caprylate~0.45–0.7%
Formula
Irritation risk
Low
More about Stearyl caprylate
Sodium polyacrylate~0.45–0.65%
Formula
Irritation risk
Low
Works for
Mattifying

Used to create a gel-like product texture, as well as to stabilize emulsions

More about Sodium polyacrylate
Stearic acid~0.6–0.9%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Helps oil and water mix together and works as an emollient

More about Stearic acid
Palmitic acid~0.4–0.6%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that is naturally present in skin and helps soften it

More about Palmitic acid
Limonene~0.25–0.5%
Irritant · high
Irritation risk
High

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

More about Limonene
Vitreoscilla ferment~0.25–0.5%
Formula
Irritation risk
Low
More about Vitreoscilla ferment
Glycine soja oil~0.25–0.5%
Key activeComedogenic 2/5Irritant · medium
Irritation risk
Medium
Comedogenicity
2/5
Works for
Moisturizing

A good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.

More about Glycine soja oil
Tocopherol~0.25–0.5%
Formula
Irritation risk
Low
Works for
Anti-oxidationMoisturizingAnti-inflammatoryAnti-aging

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
Sodium hydroxide~0.25–0.45%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Stearyl alcohol~0.3–0.55%
Formula
Irritation risk
Low
Works for
Cleansing

An emollient that helps soften the skin

More about Stearyl alcohol
Myristyl alcohol~0.25–0.5%
Irritant · high
Irritation risk
High
Works for
Moisturizing

Helps to stabilize the product formulation while softening the upper layer of the skin. Can be irritating

More about Myristyl alcohol
Myristic acid~0.4–0.6%
Comedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5
Works for
Cleansing

Helps oil and water mix together. Could be comedogenic

More about Myristic acid
Benzyl salicylate~0.2–0.35%
Irritant · high
Irritation risk
High

A fragrance. Is a likely irritant

More about Benzyl salicylate
Linalool~0.2–0.35%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Benzyl alcohol~0.1–0.25%
Irritant · high
Irritation risk
High

A preservative. Can be used to mask unpleasant smell. Can be irritating

More about Benzyl alcohol
Alteromonas ferment extract~0.15–0.3%
Key active
Irritation risk
Low
Works for
Moisturizing

A marine extract that helps attract water to the upper layer of the skin. It is claimed to have anti-inflammatory properties but research is lacking

More about Alteromonas ferment extract
Hydroxypalmitoyl sphinganine~0.15–0.25%
Hero · Moisturizing
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryReduces irritation

A type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin

More about Hydroxypalmitoyl sphinganine
Citral~0.1–0.2%
Irritant · high
Irritation risk
High

A fragrance with a lemon scent. A likely irritant

More about Citral
Geraniol~0.1–0.15%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Geraniol
Parfum~0.05–0.1%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Ingredient list view

Water, Dimethicone, Alcohol denat., Glycerin, Isocetyl stearate, Polyglyceryl-2 stearate, Isononyl isononanoate, Pentylene glycol, Butylene glycol, Stearyl heptanoate, Peg-8 stearate, Mannose, Cetyl alcohol, Hydroxypropyl starch phosphate, Disodium stearoyl glutamate, Phenoxyethanol, Stearyl caprylate, Sodium polyacrylate, Stearic acid, Palmitic acid, Limonene, Vitreoscilla ferment, Glycine soja oil, Tocopherol, Sodium hydroxide, Stearyl alcohol, Myristyl alcohol, Myristic acid, Benzyl salicylate, Linalool, Benzyl alcohol, Alteromonas ferment extract, Hydroxypalmitoyl sphinganine, Citral, Geraniol, Parfum

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Amazon USPrice as of 10/9/2026 21:24 GMT
$59.00
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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
BIOTHERMAQUASOURCE NIGHT SPAYOUR PRODUCTVichyNutrilogie 2 Intense CreamLancômeVisionnaire Nuit Beauty Sleep Perfector Advanced Multi-Correcting Gel-In-OilKiehl'sUltra Facial Cream Duo
Match—61%59%58%
Price$46.80$7.93−$38.87$93.00+$46.20$51.56+$4.76
Shared key ingredients—5 of 85 of 84 of 8
Key difference—PetrolatumAdenosineSunflower Seed Oil
Irritancy High Medium High Medium
Drying alcohol Contains 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 14 studies and safety reviews.

  1. 1
    Dimethicone as a protective ingredient in topical medicationsjaad.org
  2. 2
    Final Report on the Safety Assessment of Dimethicone Copolyoljournals.sagepub.com
  3. 3
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  4. 4
    Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmeticscir-safety.org
  5. 5
    Safety Assessment of PEG Diesters as Used in Cosmeticscir-safety.org
  6. 6
    Vitamin E in dermatologyncbi.nlm.nih.gov
BIOTHERM AQUASOURCE NIGHT SPA
BIOTHERMAQUASOURCE NIGHT SPA
Buy on Amazon$59.00 · as of 10/9 21:24 GMT

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

Buy on Amazon$59.00 · as of 10/9 21:24 GMT

As an Amazon Associate, WIMJ earns from qualifying purchases.