Skin Conditioning

Zostera Marina Extract

INCI: ZOSTERA MARINA EXTRACT

Reviewed by Kate · Last updated 2 Jun 2026

A marine extract with antioxidant potential, derived from seagrass

Best For Skin Types

All, Dry, Mature

Addresses

Fine lines, Dryness, Hydration

Usage Frequency

Daily

What Is Zostera Marina Extract?

Zostera marina extract comes from eelgrass, a marine flowering plant found in coastal waters. The extract is rich in flavonoid compounds, including apigenin, chrysoeriol, and luteolin, which are naturally occurring plant chemicals with antioxidant properties.

In skincare, zostera marina extract functions as a skin conditioner. Its bioactive compounds work to help protect the skin from oxidative stress and may support the skin's natural resilience.

How It Works

The flavonoid compounds in zostera marina extract work by scavenging free radicals and reactive oxygen species in the skin. This antioxidant action helps reduce oxidative stress, which is implicated in premature ageing and skin damage.

Additionally, the extract may help slow the activity of MMP-1, an enzyme that breaks down collagen in the skin. By supporting collagen stability, the extract may contribute to maintaining skin firmness and elasticity over time.

Clinical Evidence & References

Laboratory studies have demonstrated that compounds isolated from zostera marina extract possess significant antioxidant activity and can inhibit MMP-1 expression. These findings suggest potential benefits for photoaged or environmentally stressed skin.

However, most evidence comes from in vitro research. Human clinical studies examining the efficacy of zostera marina extract in skincare products are limited, so the extent of its benefits in real-world use remains to be fully established.

How to Use

Zostera marina extract is typically found in serums, moisturisers, and treatment products at concentrations that support its conditioning and antioxidant function. It works well in formulations alongside other antioxidants like vitamin C or niacinamide, and can be used as part of both morning and evening routines.

Safety & Precautions

Zostera marina extract is generally well-tolerated. As with any ingredient, those with known sensitivities to seaweed or marine-derived ingredients should patch test before broader use.

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