Japan Ingredient Glossary

Cosmetics · Plant extracts

Gettō (Shell Ginger)

月桃 (Gettō)

Also known as: Alpinia zerumbet, Shell ginger, Sannin (Okinawan dialect)

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At a glance

CategoryCosmetics
INCI nameAlpinia Zerumbet Leaf Extract↗
Japanese labeling nameゲットウ葉エキス
Common Japanese notations月桃, ゲットウ, サンニン (沖縄)
OriginPlant-derived (leaves, seeds, and rhizomes of Alpinia zerumbet)
Typical functionsAntioxidant, Antimicrobial, Skin conditioning
Regulatory status in JapanListed cosmetic ingredient. Traditional Okinawan food and aromatic use.

Gettō (月桃), also known as shell ginger, is a tropical herb native to Okinawa with a long cultural history spanning food preservation, ceremonial use, and traditional medicine. Research at the University of the Ryukyus demonstrated notable antioxidant activity; the leaf oil and hydrosol are now used across skincare, aromatic water, and herbal tea lines developed by Okinawan producers.

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Classification

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Common OEM product categories

Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.

  • Facial toners
  • Body lotions
  • Aromatic waters
  • Herbal teas
  • Insect repellent

Ingredient profile

Alpinia zerumbet is a perennial in the Zingiberaceae family, native to the Ryukyu Islands and Amami. The aerial parts (leaves) and rhizomes yield different compound profiles: leaf extracts are rich in polyphenols (kaempferol derivatives, dihydro-5,6-dehydrokavain), while leaf oil contains 1,8-cineole, α-terpineol, and camphor notes.

Commercial forms include leaf water (hydrosol), essential oil, dried leaf for tea, and standardized leaf extract. Okinawan producers often market the ingredient within 'longevity' storytelling tied to Blue Zone research contexts.

OEM applications

Cosmetics: facial toners, hair rinses, aromatic waters, and body sprays. The scent bridges citrus-woody-herbaceous categories.

Food/beverage: herbal infusions and seasonings; traditional use includes wrapping mochi for preservation due to antifungal activity.

Regulatory classification in Japan

Accepted cosmetic ingredient under the labeling name ゲットウ葉エキス (for leaf extract forms).

Traditional food use; standard food safety law applies to food-grade preparations.

Regulatory classification in other markets

EUCosIng-listed for cosmetic use; verify latest entry.
USAAcceptable as a cosmetic ingredient under MoCRA; supplier documentation advised for novel food pathways.
ChinaVerify current IECIC entry; traditional cosmetic use in the Ryukyu region.

Market reference formulations

Example finished products will be added after ingredient list verification. Organic JAS certification is held by a subset of Okinawan producers.

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.

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Quick answers

What is Gettō (Shell Ginger)?
Gettō (月桃), also known as shell ginger, is a tropical herb native to Okinawa with a long cultural history spanning food preservation, ceremonial use, and traditional medicine. Research at the University of the Ryukyus demonstrated notable antioxidant activity; the leaf oil and hydrosol are now used across skincare, aromatic water, and herbal tea lines developed by Okinawan producers.
What is the regulatory status of Gettō (Shell Ginger) in Japan?
Listed cosmetic ingredient. Traditional Okinawan food and aromatic use.
What products typically use Gettō (Shell Ginger)?
Facial toners / Body lotions / Aromatic waters / Herbal teas / Insect repellent
Where does Gettō (Shell Ginger) come from?
Plant-derived (leaves, seeds, and rhizomes of Alpinia zerumbet)
What is the INCI / JSCI labeling name for Gettō (Shell Ginger)?
INCI: Alpinia Zerumbet Leaf Extract / JSCI: ゲットウ葉エキス

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FAQ for OEM buyers

Q. What is gettō botanically?

Gettō is the Japanese name for Alpinia zerumbet, a perennial in the Zingiberaceae (ginger) family native to the Ryukyu Islands and Amami archipelago.

Sources

Q. What is the JSCI labeling name?

The JSCI labeling name for the leaf extract form is ゲットウ葉エキス, with INCI rendering Alpinia Zerumbet Leaf Extract.

Sources

  • JSCI cosmetic ingredient dictionary (industry reference)

Industry-knowledge claim — not yet pinned to a single primary source

Q. What compounds are characteristic of gettō?

Leaf extracts contain polyphenols including kaempferol derivatives and dihydro-5,6-dehydrokavain (DDK), while the leaf essential oil contains 1,8-cineole, terpineol and camphor notes.

Sources

  • Source dossier (provided)

Industry-knowledge claim — not yet pinned to a single primary source

Q. What traditional uses exist in Okinawa?

Gettō leaves have a long tradition of wrapping mochi for preservation and are used in ceremonial settings; the plant is locally called サンニン.

Sources

  • Source dossier (provided)

Industry-knowledge claim — not yet pinned to a single primary source

Use cases

  • Facial toners and aromatic waters

    Positioning
    Okinawan botanical skincare with citrus-woody-herbaceous scent
    Formulation notes
    Hydrosol fits well into low-preservative toners; pair with humectants

    Sources

    • Source dossier (provided)

    Industry-knowledge claim — not yet pinned to a single primary source

  • Body lotions

    Positioning
    Soothing, antioxidant-positioned body care
    Formulation notes
    Leaf extract used at supplier-recommended levels; check IFRA limits when essential oil is added

    Sources

    • Source dossier (provided)

    Industry-knowledge claim — not yet pinned to a single primary source

  • Herbal teas

    Positioning
    Okinawan longevity / herbal infusion category
    Formulation notes
    Dried leaves are blended with other Okinawan botanicals such as guava and goya

    Sources

    • Source dossier (provided)

    Industry-knowledge claim — not yet pinned to a single primary source

  • Insect-repellent body sprays

    Positioning
    Natural-fragrance repellent positioning
    Formulation notes
    Marketing claims on insect repellency must comply with applicable pesticide regulations in destination market

    Sources

    • Source dossier (provided)

    Industry-knowledge claim — not yet pinned to a single primary source

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References

  1. University of the Ryukyus — Alpinia zerumbet research publications
  2. Okinawa Prefectural Superior Product catalog

Last updated: 2026-04-23. Ingredient entries are reviewed at least annually against current regulatory listings.

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