Cosmetics · Quasi-drug actives
Trans-3,4'-Dimethyl-3-Hydroxyflavanone
トランス-3,4'-ジメチル-3-ヒドロキシフラバノン (Toransu jimechiru hidorokishi furabanon)
Also known as: Kao markets a preparation as t-Flavanone
At a glance
| Category | Cosmetics |
|---|---|
| INCI name | Flavanone derivative (specification-dependent) |
| Japanese labeling name | トランス-3,4'-ジメチル-3-ヒドロキシフラバノン |
| Common Japanese notations | トランス-3,4'-ジメチル-3-ヒドロキシフラバノン, t-フラバノン |
| Origin | Synthetic (flavanone derivative) |
| Typical functions | Quasi-drug hair growth / scalp active |
| Regulatory status in Japan | Approved as a quasi-drug (医薬部外品) active by Japan's MHLW. Approval applied for by Kao Corporation. |
Trans-3,4'-dimethyl-3-hydroxyflavanone is a synthetic flavanone derivative developed by Kao Corporation as a quasi-drug active for hair-related claims. Kao markets its preparation of this ingredient under the brand name t-Flavanone.
Classification
Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.
Product applications
Functions
Regulatory tags
Origin
Used in (typical product categories)
Finished-product categories that commonly include this ingredient in Japanese-market formulations.
- Medicated hair tonics (薬用育毛剤)
- Scalp-care products marketed by Kao
What it is
Trans-3,4'-dimethyl-3-hydroxyflavanone is a flavanone-class compound with specific methyl and hydroxyl substituents. It is a developed-for-hair-care active that functions through pathways related to hair follicle activity.
Typical uses in Japanese products
Use is concentrated in Kao's medicated hair tonics and scalp-care products.
Regulatory classification in Japan
Approved by MHLW as a quasi-drug hair active following Kao Corporation's application. Permitted claims relate to scalp / hair function within the standard quasi-drug claim framework.
Regulatory classification in other markets
| EU | Verify the specific INCI registration in current CosIng. |
|---|---|
| USA | Verify INCI registration. |
| China | Verify against current IECIC listings. |
| Korea | Verify against current KFDA / MFDS listings. |
Example products
Use is concentrated in Kao's medicated hair-care lines. Specific SKU listings 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.
Related ingredients
References
- Japan PMDA — quasi-drug active ingredient approval registry
- Kao Corporation technical publications referencing t-Flavanone
Last updated: 2026-04-22. Ingredient entries are reviewed at least annually against current regulatory listings.