Who owns Bluelet?
Bluelet is owned by Kobayashi Pharmaceutical (Japan, TSE: 4967).[1]
This ownership is reported in official statements but has not yet been matched to a regulatory filing.
Evidence: Kobayashi Pharmaceutical Integrated Report 2026, Kobayashi Pharmaceutical Co., Ltd. Last checked .
Key facts
- Current owner
- Kobayashi Pharmaceutical Co., Ltd. reported
- Owner HQ
- 🇯🇵 Japan, Osaka
- Origin
- 🇯🇵 Japan
- Founded
- 1969
- Category
- Home care › Household cleaning › Surface & bathroom cleaners
- Parent ticker
- TSE: 4967
- Last verified
- · 1 sources
About Bluelet
Bluelet is a cleaner and freshener for flush toilets that Kobayashi Pharmaceutical launched in 1969, anticipating the spread of flush toilets when only about 20 per cent of Japanese toilets flushed. It took the company into household products, a liquid version followed in 2001, and Bluelet Decoral and Stampy were developed from 2014 for tankless toilets. Annual sales exceed 10 billion yen, the company says.
Ownership timeline of Bluelet
- Current owner Kobayashi Pharmaceutical [1] reported
Where Bluelet sits in Kobayashi Pharmaceutical
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Kobayashi Pharmaceutical ownership tree →
See the full Kobayashi Pharmaceutical brand portfolio (6) →
Other brands owned by Kobayashi Pharmaceutical
Kobayashi Pharmaceutical controls 6 brands on Brandtree, 3 of them in home care.
Also in home care
Founded in the 1960s
- Ammeltz (1966)
Other brands in surface & bathroom cleaners, and who owns them
The 34 brands in surface & bathroom cleaners on Brandtree belong to 21 owners. The largest is SC Johnson, with 4.
| Brand | Owner | Owner based in |
|---|---|---|
| Method | SC Johnson | 🇺🇸 United States |
| Formula 409 | Clorox | 🇺🇸 United States |
| Flash | Grupo AlEn | 🇲🇽 Mexico |
| Ajax | Colgate-Palmolive | 🇺🇸 United States |
| Armor All | Energizer Holdings | 🇺🇸 United States |
| Nufăr | Farmec | 🇷🇴 Romania |
| Bon Ami | Faultless Brands | 🇺🇸 United States |
| El Kef | Lesieur Cristal | 🇲🇦 Morocco |
About the owner: Kobayashi Pharmaceutical
Kobayashi Pharmaceutical is a publicly listed company headquartered in Osaka, Japan, founded in 1886. Brandtree records 6 brands under its control, and it is listed as TSE: 4967.
Kobayashi Pharmaceutical traces its origin to 1886, when Chubei Kobayashi opened a general merchandise and cosmetics store in Nagoya, and was incorporated in Osaka in 1919. After selling its wholesale business in 2008 it became a pure manufacturer of niche household products and over-the-counter medicines, with about 150 domestic brands and net sales of 165.7 billion yen in 2025, about 28 per cent of them overseas. It voluntarily recalled red yeast rice products in 2024.
Kobayashi Pharmaceutical: full profile, brands and acquisition history →
🇯🇵 Bluelet and other Japanese brands
Brandtree records a controlling owner for 456 brands that began in Japan. 23 of them (5%) are now controlled by a company headquartered in another country; Bluelet is not one of them.
Frequently asked questions
Who is the parent company of Bluelet?
The parent company of Bluelet is Kobayashi Pharmaceutical, a publicly listed company headquartered in Japan.
Is Bluelet Japanese?
Yes. Bluelet originated in Japan in 1969 and its owner, Kobayashi Pharmaceutical, is also headquartered in Japan.
Is Bluelet still owned by Kobayashi Pharmaceutical?
Yes. As of 16 September 2026, Bluelet is still owned by Kobayashi Pharmaceutical. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Kobayashi Pharmaceutical Integrated Report 2026 — Kobayashi Pharmaceutical Co., Ltd., Annual report; retrieved 16 September 2026.
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