What's In My Jar
DHC By The Sea Mineral Cream
DHC

DHC By The Sea Mineral Cream

Efficacy75/100IrritancyMedium
See all ingredients

Works for

Moisturizing
Squalane, Glycerin + 8 more
Works
What the product description says
“By The Sea Mineral Cream harnesses the power of Japan’s Izu-Akazawa deep sea water and marine plant-derived ingredients to provide superior moisturization for clearer, more balanced and brighter-looking skin.”
Source: Skinstore

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, lactobacillus ferment.

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, squalane.

SqualaneKey active· Emollient, OcclusiveEffect: HighAn oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.~6.4–9.6%
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~4.5–6.8%
Glyceryl stearate seKey activeEffect: MediumUsed to stabilize the product formulations and works as an emollient~1.4–2.1%
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~0.55–1.3%
Glycine soja sterolsKey active· EmollientEffect: HighAn emollient that helps soften the skin~0.2–0.75%
Porphyra yezoensis extractKey activeEffect: MediumHelps attract water to the upper layer of the skin and might have some anti-oxidant properties~0.1–0.35%
Lactobacillus fermentKey active· HumectantEffect: HighA fermentation product created by bacteria Lactobacillus. The fermented product has anti-bacterial properties and might be helpful in calming down inflammation, but studies are lacking. Helps attract water to the upper layer of the skin. Can be used as a preservative~0.05–0.25%
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~3.1–4.6%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~2.1–3.2%
Polyglyceryl-10 stearateEffect: LowHelps water and oil mix together and softens the upper layer of the skin~1–1.45%

Can it cause trouble?

Irritancy
2 strong irritants: Alcohol, Rosa rugosa flower extract
Medium risk
We flagged 7 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~0.1–0.4%est.
Rosa rugosa flower extract—High~0.05–0.25%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~2.1–3.2%est.
Peg-240/hdi copolymer bis-decyltetradeceth-20 etherHelps create a gel-like product textureMedium~1.6–2.4%est.
Polyglyceryl-10 stearateHelps water and oil mix together and softens the upper layer of the skinMedium~1–1.45%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~0.2–0.75%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.1–0.4%est.
Comedogenic
2 ingredients rated 2 or more on the 0–5 pore-clogging scale
2 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
Porphyra yezoensis extractHelps attract water to the upper layer of the skin and might have some anti-oxidant properties3/5~0.1–0.35%est.
Glyceryl stearate seUsed to stabilize the product formulations and works as an emollient2/5~1.4–2.1%est.

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Ingredients

Filter by role to see what each ingredient is doing.

Sea water~26–39%
Formula
Irritation risk
Low

Dissolves other ingredients. It does not have additional skin benefits compared to plain water

More about Sea water
Squalane~6.4–9.6%
Key active
Irritation risk
Low
Works for
Moisturizing

An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.

More about Squalane
Glycerin~4.5–6.8%
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
Butylene glycol~3.1–4.6%
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
Glycereth-26~2.4–3.5%
Formula
Irritation risk
Low

Helps create a thicker product consistency

More about Glycereth-26
Pentylene glycol~2.1–3.2%
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
Peg-240/hdi copolymer bis-decyltetradeceth-20 ether~1.6–2.4%
Irritant · medium
Irritation risk
Medium

Helps create a gel-like product texture

More about Peg-240/hdi copolymer bis-decyltetradeceth-20 ether
Glyceryl stearate se~1.4–2.1%
Key activeComedogenic 2/5
Irritation risk
Low
Comedogenicity
2/5
Works for
CleansingMoisturizing

Used to stabilize the product formulations and works as an emollient

More about Glyceryl stearate se
Phytosteryl oleate~1.2–1.8%
Formula
Irritation risk
Low
More about Phytosteryl oleate
Polyglyceryl-10 stearate~1–1.45%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps water and oil mix together and softens the upper layer of the skin

More about Polyglyceryl-10 stearate
Stearyl alcohol~0.95–1.45%
Formula
Irritation risk
Low
Works for
Cleansing

An emollient that helps soften the skin

More about Stearyl alcohol
Water~0.5–1.2%
Formula
Irritation risk
Low

Plain old water

More about Water
Dimethicone~0.55–1.3%
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
Hydrogenated lecithin~0.45–1.05%
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
Phenoxyethanol~0.35–0.75%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Saccharina longicruris extract~0.35–0.75%
Formula
Irritation risk
Low
More about Saccharina longicruris extract
Sodium citrate~0.2–0.75%
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
Glycine soja sterols~0.2–0.75%
Key active
Irritation risk
Low
Works for
Moisturizing

An emollient that helps soften the skin

More about Glycine soja sterols
Citric acid~0.1–0.4%
Irritant · medium
Irritation risk
Medium

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

More about Citric acid
Alcohol~0.1–0.4%
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
Porphyra yezoensis extract~0.1–0.35%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-oxidation

Helps attract water to the upper layer of the skin and might have some anti-oxidant properties

More about Porphyra yezoensis extract
Lactobacillus ferment~0.05–0.25%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidationAnti-inflammatoryReduces irritation

A fermentation product created by bacteria Lactobacillus. The fermented product has anti-bacterial properties and might be helpful in calming down inflammation, but studies are lacking. Helps attract water to the upper layer of the skin. Can be used as a preservative

More about Lactobacillus ferment
Rosa rugosa flower extract~0.05–0.25%
Irritant · high
Irritation risk
High
More about Rosa rugosa flower extract
Ingredient list view

Sea water, Squalane, Glycerin, Butylene glycol, Glycereth-26, Pentylene glycol, Peg-240/hdi copolymer bis-decyltetradeceth-20 ether, Glyceryl stearate se, Phytosteryl oleate, Polyglyceryl-10 stearate, Stearyl alcohol, Water, Dimethicone, Hydrogenated lecithin, Phenoxyethanol, Saccharina longicruris extract, Sodium citrate, Glycine soja sterols, Citric acid, Alcohol, Porphyra yezoensis extract, Lactobacillus ferment, Rosa rugosa flower extract

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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
DHCBy The Sea Mineral CreamYOUR PRODUCTSkin Inc Supplement BarPure Serum-Infused MoisturizerLa Roche-PosayToleriane Ultra Night MoisturizerBeauty PieCica Moisturiser Sachet
Match—42%42%42%
Price—$40.00$23.98—
Shared key ingredients—3 of 53 of 53 of 5
Key difference—Ceramide 3NiacinamideMadecassoside
Irritancy Medium Low Low Low
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 8 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    Safety Assessment of Glycerin Ethoxylates as Used in Cosmeticscir-safety.org
  3. 3
    Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmeticscir-safety.org
  4. 4
    Dimethicone as a protective ingredient in topical medicationsjaad.org
  5. 5
    Final Report on the Safety Assessment of Dimethicone Copolyoljournals.sagepub.com
  6. 6
    The effect of probiotics on immune regulation, acne, and photoagingncbi.nlm.nih.gov
DHC By The Sea Mineral Cream
DHCBy The Sea Mineral Cream
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