Cosmetics · Plant extracts
Black Soybean Seed Extract
クロダイズ種子エキス (Kurodaizu shushi ekisu)
Also known as: Black Soybean Extract, Kuromame Extract
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| Category | Cosmetics |
|---|---|
| INCI name | Glycine Soja Seed Extract / Glycine Max Seed Extract (black cultivar) |
| Japanese labeling name | ダイズ種子エキス |
| Common Japanese notations | クロダイズ種子エキス, 黒豆エキス |
| Origin | Plant-derived (black-seeded Glycine max cultivar) |
| Typical functions | Skin conditioning, Antioxidant |
| Regulatory status in Japan | Cosmetic ingredient listed in the JSCI (Japanese Cosmetic Industry Association) labeling name dictionary. Also a staple traditional food. |
Kuromame — black-seeded cultivars of Glycine max — are the celebratory New Year food that symbolizes good health for the coming year (a pun on "mame" meaning both bean and diligent). The black seed coat is rich in anthocyanins, and cosmetic extract concentrates these along with the protein and isoflavone content of the soybean.
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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
Functions
Origin
Common OEM product categories
Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.
- Face toners, essences, and serums
- Anti-pollution and antioxidant skincare lines
- Traditional New Year dishes (kuromame simmered black beans)
- Black soybean tea (kuromame-cha) beverages
- Functional supplements (eye health, antioxidant)
Ingredient profile
Black soybean seed extract is produced by water or hydro-alcoholic extraction of black-cultivar Glycine max seeds. The extract contains anthocyanins (primarily cyanidin-3-glucoside), isoflavones including daidzein and genistein, proteins, and amino acids.
OEM applications
In cosmetics, black soybean extract appears in face toners, essences, and hair products, often positioned around antioxidant and Japanese-heritage narratives.
In food, kuromame are a New Year osechi-ryōri staple, simmered in a sweet soy-sauce-based liquid. The same beans are also used for black bean tea.
Regulatory classification in Japan
Cosmetic use is permitted under the JSCI dictionary.
Regulatory classification in other markets
| EU | Glycine Soja/Max Seed Extract listed in CosIng. Permitted. |
|---|---|
| USA | INCI recognized by PCPC. |
| China | Permitted per IECIC listings. |
| Korea | Permitted under KFDA / MFDS. |
Market reference formulations
Example finished products will be added after each product's current full ingredient list has been verified.
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.
Seasonality & supply calendar
- Harvest months
- October – November (harvest); January – February (drying / shipping)
- Peak supply
- December – February
- Off-season
- Year-round via dried-stock storage
Source: 農林水産省 豆類統計. Tamba black soybean (兵庫丹波) is a famous regional brand cultivar, but is NOT in the 農林水産省 GI register (Hyogo's GI list contains 神戸ビーフ, 但馬牛, 揖保乃糸, etc. but not Tamba kuromame); harvest is highly seasonal but dried beans store 1+ year.
Storage requirements
How the receiving OEM facility needs to handle inbound raw material.
- Temperature
- Room temperature for dry beans; refrigerated for extract
- Conditions
- Sealed; protect from humidity
- Shelf life
- 24 months sealed
Supply concentration
Where this ingredient comes from — useful for single-source-risk planning.
- Primary regions
- Hyogo (Tamba GI-protected region)
- Import dependence
- 100% domestic for premium / GI-grade Tamba black soybean
農林水産省 豆類統計
Certifications commonly available
Certification schemes commonly obtainable for this raw material. Always confirm the specific supplier's current certificate before contracting.
| Scheme | Availability | |
|---|---|---|
| Organic JAS | On-request | |
| Non-GMO | Common | |
| Halal | On-request | |
| Vegan | Inherent | |
| GI status | Regional brand recognition (not GI-registered) | 丹波黒大豆 is a renowned regional cultivar but is NOT registered under the 農林水産省 GI scheme. |
Alternative ingredients
Related ingredients commonly evaluated as substitutes.
Quick answers
- What is Black Soybean Seed Extract?
- Kuromame — black-seeded cultivars of Glycine max — are the celebratory New Year food that symbolizes good health for the coming year (a pun on "mame" meaning both bean and diligent). The black seed coat is rich in anthocyanins, and cosmetic extract concentrates these along with the protein and isoflavone content of the soybean.
- What is the regulatory status of Black Soybean Seed Extract in Japan?
- Cosmetic ingredient listed in the JSCI (Japanese Cosmetic Industry Association) labeling name dictionary. Also a staple traditional food.
- What products typically use Black Soybean Seed Extract?
- Face toners, essences, and serums / Anti-pollution and antioxidant skincare lines / Traditional New Year dishes (kuromame simmered black beans) / Black soybean tea (kuromame-cha) beverages / Functional supplements (eye health, antioxidant)
- Where does Black Soybean Seed Extract come from?
- Plant-derived (black-seeded Glycine max cultivar)
- What is the INCI / JSCI labeling name for Black Soybean Seed Extract?
- INCI: Glycine Soja Seed Extract / Glycine Max Seed Extract (black cultivar) / JSCI: ダイズ種子エキス
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Regulatory guidance
Take the next step
FAQ for OEM buyers
Q. What INCI name is correct for black soybean seed extract?
The standard INCIs are 'Glycine Soja (Soybean) Seed Extract' or 'Glycine Max Seed Extract' — there is no separate INCI for black soybean specifically, since 'black soybean' is a cultivar (variety) of Glycine max, not a different species. The 'kuromame' or 'black cultivar' specification is communicated as a marketing claim with COA backing.
Sources · Last reviewed: 2026-04-26
- CosIng database — Glycine Soja / Glycine Max Seed Extract
Q. What is the soy allergen labeling requirement in major markets?
Soy is a major allergen requiring declaration under FDA FALCPA (US), EU Allergen Regulation (Annex II of EU Regulation 1169/2011 for food; for cosmetics it appears in the INCI list itself), and Japan's CAA recommended-allergen list. Cosmetic INCI listing of 'Glycine Soja' satisfies the disclosure requirement.
Sources · Last reviewed: 2026-04-26
- FDA FALCPA — soy as Big-8 allergen
- Japan Consumer Affairs Agency — recommended allergen labeling (soybean)
Q. Is GMO status a concern for black soybean cosmetic extracts?
Conventional commercial black soybean cultivation, especially Japanese kuromame (notably Tanba kuromame and Hokkaido cultivars), is non-GMO. For US-soy-derived ingredients, request a non-GMO declaration if non-GMO claims are needed; EU labeling thresholds for GMO are >0.9%.
Sources · Last reviewed: 2026-04-26
- EU Regulation 1830/2003 — GMO labeling threshold
- 農林水産省 (Ministry of Agriculture, Forestry and Fisheries) — Japanese soybean cultivation statistics, kuromame regional varieties
Q. What functional markers are typically used for black soybean extract?
Anthocyanins (cyanidin-3-glucoside is the dominant pigment in black soybean seed coat) are typical functional markers, along with isoflavones (genistein, daidzein) inherited from the soy genus. Extracts may be standardized to anthocyanin or polyphenol content per supplier method.
Sources · Last reviewed: 2026-04-26
- Peer-reviewed: Lee et al., anthocyanin profile of Glycine max black cultivars (Food Chemistry)
Use cases
Antioxidant essence / serum
- Positioning
- Anti-aging line with kuromame heritage narrative
- Typical usage level
- 1-5% liquid extract
- Formulation notes
- Anthocyanin-rich extracts may add light pigmentation to formula; stability test for color shift
Sources
- Industry knowledge — Japanese antioxidant skincare market
Industry-knowledge claim — not yet pinned to a single primary source
Hair tonic / scalp serum
- Positioning
- Heritage Japanese-botanical hair-care line
- Typical usage level
- 1-3%
- Formulation notes
- Often combined with rice bran and tōki for traditional Japanese narrative
Sources
- Industry knowledge — Japanese hair-care market
Industry-knowledge claim — not yet pinned to a single primary source
Dietary supplement-adjacent inner-beauty drink (RTD or sachet)
- Positioning
- Inner-beauty / kuromame anti-aging beverage
- Formulation notes
- Note: not a cosmetic but a relevant adjacent category — kuromame extract widely used in Japanese inner-beauty positioning
Sources
- Industry knowledge — Japanese inner-beauty (inner-care) market
Industry-knowledge claim — not yet pinned to a single primary source
Hydrating toner
- Positioning
- Daily-use Japanese-botanical line
- Typical usage level
- 1-3%
- Formulation notes
- Compatible with HA, glycerin; check pH stability of anthocyanin
Sources
- Industry knowledge — Japanese skincare 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 — ダイズ種子エキス
- EU CosIng entry: Glycine Soja Seed Extract
Last updated: 2026-04-22. Ingredient entries are reviewed at least annually against current regulatory listings.