Cosmetics · Marine ingredients
Cladosiphon Okamuranus Extract
オキナワモズクエキス (Okinawa mozuku ekisu)
Also known as: Mozuku Extract, Okinawa Mozuku Extract
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| Category | Cosmetics |
|---|---|
| INCI name | Cladosiphon Okamuranus Extract↗ |
| Japanese labeling name | モズクエキス |
| Common Japanese notations | モズクエキス, オキナワモズクエキス |
| Origin | Marine (Cladosiphon okamuranus, Okinawa mozuku) |
| Typical functions | Skin conditioning, Moisturizing, Functional food ingredient (fucoidan source) |
| Regulatory status in Japan | Cosmetic ingredient listed in the JSCI (Japanese Cosmetic Industry Association) labeling name dictionary. The seaweed itself is a designated food product of Okinawa and is widely consumed in Japan. |
Mozuku — specifically Cladosiphon okamuranus — is a brown seaweed cultivated in the warm waters around Okinawa. It is the primary Japanese source of high-fucoidan seaweed, and Okinawa supplies the overwhelming majority of commercial mozuku consumed in Japan. In cosmetics and supplements, mozuku-derived fucoidan has become a category of its own.
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Classification
Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.
Product applications
Regulatory tags
Origin
Common OEM product categories
Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.
- Face masks and essences
- Marine-positioned skincare
- Fucoidan supplements
- Okinawan cuisine
Ingredient profile
Cladosiphon okamuranus extract is produced by water or hydro-alcoholic extraction of Cladosiphon okamuranus fronds. The extract is a particularly rich source of fucoidan, the sulfated polysaccharide that has driven much of mozuku's functional positioning.
Isolated fucoidan is sometimes supplied as a separate ingredient with its own specification. The whole-mozuku extract and isolated fucoidan are distinct materials with distinct use profiles.
OEM applications
In cosmetics, mozuku extract appears in face masks, essences, and moisturizing body products. Supplier narratives frequently emphasize the Okinawan marine provenance.
In supplements, fucoidan derived from mozuku is sold globally, often with Okinawan-origin marketing.
In food, mozuku is eaten in rice vinegar (mozuku-su) and served as a soup ingredient, especially in Okinawan cuisine.
Regulatory classification in Japan
Listed in the JSCI Japanese Cosmetic Ingredient Codex under モズクエキス and permitted as a cosmetic ingredient.
Fucoidan (specifically Okinawa mozuku-derived fucoidan) has been notified as a functional food ingredient under some Foods with Function Claims submissions.
Regulatory classification in other markets
| EU | Cladosiphon Okamuranus Extract is listed in CosIng. Permitted for cosmetic use. |
|---|---|
| USA | INCI recognized by PCPC. Fucoidan is used in both cosmetic and supplement products. |
| China | Permitted per IECIC listings. |
| Korea | Permitted as a cosmetic ingredient under the KFDA / MFDS system. |
Market reference formulations
Example finished products will be added after each product's current full ingredient list has been verified. Okinawan-origin branding varies by supplier and should be documented at the product level.
All brand names and product names referenced anywhere on this site are the property of their respective owners. Example entries are provided for informational purposes only and do not imply endorsement.
Alternative ingredients
Related ingredients commonly evaluated as substitutes.
Quick answers
- What is Cladosiphon Okamuranus Extract?
- Mozuku — specifically Cladosiphon okamuranus — is a brown seaweed cultivated in the warm waters around Okinawa. It is the primary Japanese source of high-fucoidan seaweed, and Okinawa supplies the overwhelming majority of commercial mozuku consumed in Japan. In cosmetics and supplements, mozuku-derived fucoidan has become a category of its own.
- What is the regulatory status of Cladosiphon Okamuranus Extract in Japan?
- Cosmetic ingredient listed in the JSCI (Japanese Cosmetic Industry Association) labeling name dictionary. The seaweed itself is a designated food product of Okinawa and is widely consumed in Japan.
- What products typically use Cladosiphon Okamuranus Extract?
- Face masks and essences / Marine-positioned skincare / Fucoidan supplements / Okinawan cuisine
- Where does Cladosiphon Okamuranus Extract come from?
- Marine (Cladosiphon okamuranus, Okinawa mozuku)
- What is the INCI / JSCI labeling name for Cladosiphon Okamuranus Extract?
- INCI: Cladosiphon Okamuranus Extract / JSCI: モズクエキス
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From the same origin
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Regulatory guidance
Take the next step
FAQ for OEM buyers
Q. Is Cladosiphon Okamuranus Extract a recognized INCI ingredient?
Yes, 'Cladosiphon Okamuranus Extract' is listed in CosIng as a skin-conditioning ingredient. The species is the source of fucoidan-rich Okinawan mozuku and is used globally in cosmetic and supplement applications.
Sources · Last reviewed: 2026-04-26
- CosIng database — INCI: Cladosiphon Okamuranus Extract
Q. Is the fucoidan-grade extract sold separately from the whole-plant extract?
Yes — many Okinawan suppliers sell both whole-mozuku extract and standardized fucoidan-enriched fractions, with the latter commanding premium pricing. INCI labeling must use the supplier-spec-confirmed name (Cladosiphon Okamuranus Extract or Fucoidan as applicable).
Sources · Last reviewed: 2026-04-26
- Industry knowledge — Okinawan mozuku supply chain
Industry-knowledge claim — not yet pinned to a single primary source
Q. Is Okinawa a significant region for global mozuku production?
Okinawa accounts for the dominant share of Japan's domestic mozuku production, which itself supplies a major share of global commercial mozuku. Provenance documentation is widely available for Okinawa-origin claims.
Sources · Last reviewed: 2026-04-26
- 農林水産省 (Ministry of Agriculture, Forestry and Fisheries) — Fisheries statistics on mozuku production
Q. Are fucoidan health claims permitted in cosmetic positioning?
No — health-functional claims about fucoidan (often associated with the Foods with Function Claims [FFC] / Tokuho frameworks for ingestible products) cannot be carried into cosmetic claim copy. Topical cosmetic claims must remain within the recognized cosmetic claim range.
Sources · Last reviewed: 2026-04-26
- Consumer Affairs Agency (Consumer Affairs Agency, CAA) — Foods with Function Claims (FFC) system
Use cases
Premium facial essence / serum
- Positioning
- Okinawa-marine premium hydration line, often with fucoidan story
- Typical usage level
- 0.5–3%
Sources
- Industry knowledge — Okinawa-themed cosmetics
Industry-knowledge claim — not yet pinned to a single primary source
Sheet mask
- Positioning
- Marine-themed mask in Okinawa-positioned travel-retail line
Sources
- Industry knowledge — Japanese inbound-tourism cosmetics
Industry-knowledge claim — not yet pinned to a single primary source
Body lotion
- Positioning
- Hydrating body care with Okinawa-marine narrative
Sources
- Industry knowledge — Japanese body-care market
Industry-knowledge claim — not yet pinned to a single primary source
Scalp lotion
- Positioning
- Hydrating scalp tonic for sensitive-scalp lines
Sources
- Industry knowledge — Japanese scalp-care market
Industry-knowledge claim — not yet pinned to a single primary source
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Official regulatory databases
External links to public Japanese / international regulatory authorities. We are not affiliated.
References
- JSCI (Japanese Cosmetic Industry Association) labeling name directory — モズクエキス
- EU CosIng entry: Cladosiphon Okamuranus Extract
Last updated: 2026-04-22. Ingredient entries are reviewed at least annually against current regulatory listings.