Ingredient review

Agarum Cribrosum Extract

INCI: Agarum Cribrosum Extract

A gentle seaweed extract that helps hydrate and calm the skin, but research is still early.

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In plain English

Agarum Cribrosum is a type of seaweed (also called maze algae) found in cold ocean waters. When used in skincare, it's processed into an extract that can help pull moisture into the skin and soothe irritation. Think of it as a natural hydrating booster that also calms redness.

Quick decision guide

Useful, but context matters

Agarum Cribrosum Extract is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Agarum Cribrosum Extract.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

emerging

The ingredient may be promising, but claims should be treated more cautiously.

What it is

Agarum Cribrosum Extract is a water-soluble extract derived from a brown seaweed species native to the North Pacific. It contains polysaccharides, amino acids, and minerals that support skin hydration.

How it works

The polysaccharides in the extract form a thin film on the skin that helps reduce water loss, while its mineral content may support the skin's natural barrier function. Some compounds in the algae also have antioxidant and anti-inflammatory effects, which can help calm stressed skin.

Pros

Gentle hydration

Provides moisture without clogging pores or feeling heavy, making it suitable for most skin types.

Soothing potential

Early research suggests it may help calm redness and irritation, which is helpful for sensitive skin.

Cons and cautions

Limited evidence

Most benefits are based on lab studies or ingredient properties, not large human trials.

Variable sourcing

As a wild-harvested seaweed, quality and sustainability can differ between suppliers.

Best for

  • People with dry or dehydrated skin looking for extra moisture
  • Those with sensitive or easily irritated skin who want a gentle soothing ingredient

Use caution if

  • Individuals with known allergies to seaweed or iodine should patch test first

Usage tips

Look for products that list the extract in the first half of the ingredient list for a meaningful amount.
Pair with a simple moisturizer to lock in the hydration provided by the extract.

Safety summary

Considered safe for topical use in cosmetics at typical concentrations. Allergic reactions are rare but possible, especially in individuals with seaweed or iodine sensitivities.

Research notes

Research is emerging. In vitro studies show antioxidant and anti-inflammatory activity, but human clinical data is limited. More studies are needed to confirm benefits.

Common label clues

Typical concentration
0.1% to 2%
Regulatory status
Approved as a cosmetic ingredient in the EU, US, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
Common uses
Serums, Moisturizers, Sheet masks
Environmental note
Harvested from cold ocean waters; sustainable sourcing practices are important to protect marine ecosystems.

Good to know

  • Agarum Cribrosum is also called maze algae because of its intricate, maze-like surface pattern.
  • It is often used in Korean and Japanese skincare products aimed at soothing and hydrating.

Common questions

What is Agarum Cribrosum Extract in beauty products?

Agarum Cribrosum is a type of seaweed (also called maze algae) found in cold ocean waters. When used in skincare, it's processed into an extract that can help pull moisture into the skin and soothe irritation. Think of it as a natural hydrating booster that also calms redness.

What does Agarum Cribrosum Extract do in a beauty product?

The polysaccharides in the extract form a thin film on the skin that helps reduce water loss, while its mineral content may support the skin's natural barrier function. Some compounds in the algae also have antioxidant and anti-inflammatory effects, which can help calm stressed skin.

Is Agarum Cribrosum Extract safe for most people?

Considered safe for topical use in cosmetics at typical concentrations. Allergic reactions are rare but possible, especially in individuals with seaweed or iodine sensitivities.

Who should be careful with Agarum Cribrosum Extract?

Individuals with known allergies to seaweed or iodine should patch test first

Research sources

CosIng - European Commission ingredient databaseOpenPubMed - Antioxidant activity of brown algae extractsOpenINCIDecoder - Agarum Cribrosum ExtractOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.