Ingredient

Green Caviar in Skincare

Green Caviar, known as sea grapes across Southeast Asia, is a seaweed rich in minerals and amino acids. Native to Okinawa, Japan, it has been eaten fresh for generations and is now grown and consumed across much of Asia. Discover its benefits in skincare.

Green caviar seaweed ingredient

A seaweed from Okinawa, rich in minerals and amino acids. Known as sea grapes across Southeast Asia, this age-old ingredient has been eaten fresh for generations. Discover its benefits in skincare.

What it contains

Three things it brings

The composition research on green caviar is thorough, and it explains why the ingredient earned attention.

Green caviar sea grape seaweed macro
01
Amino acids

A balanced profile, between 7 and 12 percent depending on where it grows.

Mineral texture, wet stone and seawater
02
Minerals

Phosphorus, calcium, magnesium and copper. High compared with other edible seaweeds.

Light refracting through water, antioxidant defence
03
Antioxidants

Polyphenols and carotenoids, with measurable antioxidant capacity.

Composition varies by growing region. Light, water and sediment all shift the profile, so green caviar from one farm is not identical to green caviar from another.

Skin barrier

Your skin barrier works like a wall.

The outermost layer of your skin works like brick and cement. Cells are the bricks, lipids are the seal between them. Lose the seal and gaps open up.

Compromised
Water escapes
Moisture leaves faster than skin can replace it. Irritants get in more easily.
Supported
Water stays put
Skin holds onto what it has. Plumper, more comfortable, less reactive.

Algae survive UV, salt and constant oxidative stress. They manage it by making protective compounds.

Those are the compounds that turn out to be useful applied to skin. Not as a replacement for ceramides or niacinamide, but alongside them.

How to tell if your barrier is damaged →
The Material

Solidified serum. Melts on contact.

It begins with warmth. Body heat softens the gel, which turns clear as it releases.

It sits cool on contact. Mostly water, so it feels cool from the moment it's applied.

It follows the contour. The gel moulds to the face for even, consistent contact.

Thirty minutes is the full treatment. No overnight wear, just remove and press in the rest.

The rest of the formula

Green caviar does not work alone

A botanical extract does its work as part of a system. What surrounds it matters as much as the ingredient itself.

Green Caviar minerals, amino acids, antioxidants
Ceramide
Replaces the lipids that seal the barrier.
Niacinamide
Supports barrier function and moisture retention.
Four peptides
Signal the skin to produce collagen and elastin.
Hyaluronic acid
Binds water where the skin needs it.
STARSKIN DeepMelt Collagen Green Caviar melting hydrogel face mask, 4 pack
Where to find it
DeepMelt Collagen Green Caviar

High in the formula, alongside collagen, four peptides, ceramide and niacinamide.

30 minutes 4 masks All skin types
Launching September 15
Get early access

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FAQ

Is green caviar the same as sea grapes?


Yes, two names for the same seaweed. Sea grapes is more common across Southeast Asia where it is eaten, green caviar is used more often in Japan and in cosmetics. It is unrelated to fish roe despite the name.

What does green caviar do for skin?

It contributes minerals, amino acids and antioxidant compounds. Most published research on green caviar is nutritional rather than topical, so it is best understood as a supporting active within a formula rather than a hero acting alone.

Is green caviar suitable for sensitive skin?

The extract itself is not typically associated with irritation, but suitability depends on the whole formula rather than one ingredient. What matters more for reactive skin is what is absent, particularly fragrance.

Where does green caviar come from?

It originated in Okinawa and grows across Southeast Asia, particularly the Philippines, Thailand and Vietnam. It requires specific water quality and conditions, which is why only a few countries farm it commercially.

What does green caviar actually contain?


A balanced amino acid profile, measured between roughly 7 and 12 percent total amino acid content depending on where it grows. Minerals including phosphorus, calcium, magnesium and copper, high compared to other edible seaweeds. Low total fat, mostly unsaturated. Plus polyphenols and carotenoids contributing antioxidant capacity. Composition varies by growing region, so figures differ between studies.

Can you eat green caviar?

Yes, and that is its original use. It is eaten fresh, usually raw in salads, valued for a texture that pops between the teeth. It has been part of Okinawan cuisine for generations. Eating it and applying it topically are different things though, and it appears in skincare for its composition rather than as an extension of its culinary use.