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
At a glance
| 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 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.
Classification
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Product applications
Functions
Regulatory tags
Origin
Used in (typical product categories)
Finished-product categories that commonly include this ingredient in Japanese-market formulations.
- 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)
What it is
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.
Typical uses in Japanese products
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. |
Example products
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Related ingredients
References
- JSCI 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.