Skin Conditioning

Cladosiphon Okamuranus Extract

INCI: CLADOSIPHON OKAMURANUS EXTRACT

Reviewed by Rosie · Last updated 2 Jun 2026

A brown seaweed extract traditionally used to support skin hydration and conditioning

Best For Skin Types

All, Dry, Sensitive

Addresses

Dryness, Hydration

Usage Frequency

Daily

What Is Cladosiphon Okamuranus Extract?

Cladosiphon okamuranus is a species of brown seaweed native to coastal waters around Okinawa, Japan. The extract is derived from this marine algae and is used in skincare formulations primarily for its skin conditioning properties.

Like many seaweed-derived ingredients, cladosiphon okamuranus extract contains polysaccharides and other compounds that can help maintain skin hydration and support the skin's natural moisture balance. It is found in a small proportion of skincare products, typically in concentrations that contribute to overall formulation benefit rather than serving as a primary active.

How It Works

The polysaccharides present in cladosiphon okamuranus extract work as humectants, drawing water into the skin's outer layers and helping to maintain hydration. This improved moisture retention can enhance skin softness and uniformity of texture over time.

The extract may also contain phenolic compounds with antioxidant potential, which could help defend against environmental stressors, though the degree of benefit in a finished formulation depends on concentration and stability.

Clinical Evidence & References

Specific clinical evidence for cladosiphon okamuranus extract in skincare is limited. While brown seaweed extracts in general have been studied for potential antioxidant and skin-conditioning benefits, dedicated research on this particular species as a cosmetic ingredient is sparse.

Most support for its use comes from traditional use in Japanese skincare and the general chemical profile of brown algae. Consumers interested in evidence-based ingredient choices may find more robust data available for other hydrating and conditioning ingredients.

How to Use

This ingredient is typically part of a broader formulation and does not require special application instructions. Use the product as directed on the label. It works well alongside other conditioning and hydrating ingredients, and can be incorporated into both morning and evening routines depending on the product type.

Safety & Precautions

Generally well-tolerated and considered safe for cosmetic use. Those with known sensitivities to seaweed or iodine should patch-test before full application.

Frequently Asked Questions

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