About Us

We are the first company that created and launched silicone treated cosmetic pigments to the market, which led to the development of the epoch-making two-way cake powders which can be applied to the face by either a wet or dry sponge.
From then, we continuously developed, with our original know-how and technology, various surface treatment processes, such as Amino Acid treatment, Lecithin treatment, and Ester Treatment.
The combination of the said technologies and high-quality fillers (sericite, mica, talc, etc.), which are essential for the cosmetic formulation, or functional powders (ultrafine powders, silica beads, pearl, etc.) enabled us to develop a broad range of unique products and to contribute to the development of innovative cosmetics.
We have four operation sites globally, Miyoshi Kasei, Inc. in Japan, Miyoshi America, Inc. in the United States (Connecticut), Miyoshi Europe SAS in France (Lyon), and Miyoshi Suzhou, CO., LTD. in China (Suzhou), and have been providing high quality products to customers all over the world.
Management Principles
Our corporate mission is to keep with the following statements and to contribute to the society through the personal care industries all over the world.

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We will be a dignified company which acts with steady management and generates continuous growth.
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We contribute to the personal care industry by developing valuable products, actively providing high quality and high functional products while having flexible idea and a big vision.
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We value mutual trust and respect between labor and management, and work together as a team in order to make our company more competitive.
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We aim to enhance the quality of our products and corporate value by striving to drive green manufacturing.
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We promote a freewheeling corporate culture to maximize our employees’ potential.
Corporate Message
This message represents our business philosophy centering on “Good Faith & Dignity”, which is the core value of Miyoshi Kasei Group. Based on this corporate message, we commit to the following to all the stakeholders, internal and external.

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Treating you right with “safety and reliable quality solutions”
We provide safe and highly reliable products supported by technical verification and our years of experience and extensive track record.

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Treating the “environment” right
We develop, manufacture, and provide eco-friendly products with consideration to the environment at each business site and with the lives of our customers.
We are working Not-Just-For-Profit.

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Treating “people” right
We comply with all concerned regulations around our business circumstances and ensure to operate business with respect for human rights.

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Treating “stakeholders” right
We make constant efforts to perform our business diligently and sincerely with consideration for all stakeholders, including customers, all business partners, employees, and shareholders.
Company Profile
- Trading Name
- Miyoshi Kasei, Inc.
- Locations
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Head Office
4-3-14 Ichigaya Grassgate-5F, Kudankita, Chiyoda-ku, Tokyo, 102-0073, JAPAN Tel: +81-(0)3-6265-6757 Fax: +81-(0)3-6265-6759
Application Lab & Sales Office
4-3-14-6F Kudankita, Chiyoda-ku, Tokyo, 102-0073, Japan
Iwatsuki Plant
3-8-1 Ueno, Iwatsuki-ku, Saitama-shi, Saitama, 339-0073, Japan Tel: +81-(0)48-689-3581 Fax: +81-(0)48-689-3583
Urawa Warehouse
705-1 Haranoshita, Daiyama, Midori-ku, Saitama-shi, Saitama, 336-0975, Japan Tel: +81-(0)48-816-9813
- Year of Establishment
- April 2, 1979
- Capital
- JPY 10,000,000
- Business
- The manufacture and sale of surface treated powders
- The manufacture and sale of treated cosmetic pigments and fillers
- The sale of specialized functional cosmetic materials
- Group Companies
- Miyoshi America, Inc.
Miyoshi Europe SAS
Miyoshi Suzhou, CO., LTD
Company History
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1970
1976
Founded
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1979
Established Miyoshi Kasei Limited
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1980
1984
Established U.S. Cosmetics Corporation to start import business in the U.S. market
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1986
Granted surface treatment manufacturing license to a local manufacturer to start business in France. U.S. Cosmetics Corporation started own manufacturing.
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1990
1997
Transition from Miyoshi Kasei Limited to Miyoshi Kasei, Inc.U.S. Cosmetics Corporation (USA) became a wholly owned subsidiary of Miyoshi Kasei, Inc.
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2000
2003
Established Miyoshi Europe SAS (France)
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2010
2011
Established Miyoshi Suzhou, CO., LTD. (China)
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2015
Moved to new production site in Iwatsuki, Saitama (Japan)
Opened “Tokyo Office” (currently Headquarters・Application Lab) -
2016
U.S. Cosmetics Corporation was officially renamed Miyoshi America, Inc.
Started to operate Iwatsuki Plant -
2016
The new factory in Iwatsuki Ward, Saitama City, Saitama Prefecture has been renamed the Iwatsuki Business Office and has commenced operations.
Business Overview
The unified efforts of all employees provide high-quality, high-performance products to the customers, with a spirit of “TREATING YOU RIGHT”
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Since 2012, we have operated a proprietary quality management system based on ISO 9001, ensuring integrated quality assurance from development to sales.
Implement basic research and applied development aiming to produce innovative products and meet customer needs.
Develop new products and improve existing products in corporation with our global Research & Development team.Scale-up the experimental products and develop a process of manufacturing for stable supply to the customers. Also keep safety and reliability of our products by strict inspection at Quality Control division based on Miyoshi Kasei Quality Management System.
Products are manufactured under safe and high quality standards in compliance with Miyoshi Kasei Quality Management System throughout the process from receiving raw material to shipment of our products.
Place importance on “the user’s perspective” and cooperate with our global sales team to quickly response to customers’ needs. Also, our “APPLICATION LAB” provides various support for customers.
Worldwide Network

Head Office
4-3-14 Ichigaya Grassgate-5F, Kudankita, Chiyoda-ku, Tokyo, 102-0073, Japan
Tel: +81-(0)3-6265-6757
Fax: +81-(0)3-6265-6759Iwatsuki Plant
3-8-1 Ueno, Iwatsuki-ku, Saitama-shi, Saitama, 339-0073, Japan
Tel: +81-(0)48-689-3581
Fax: +81-(0)48-689-3583
Miyoshi America, Inc.
110 Louisa Viens Dr. PO Box 859,
Dayville, CT 06241, USA
Tel: +1-860-779-3990• Application Lab & Sales Office
Fax: +1-860-779-3994
711 Executive Blvd. Suite S,
Valley Cottage, NY 10989, USA
Miyoshi Europe SAS
5, Rue Paul Rieupeyroux,
69800 Saint-Priest, FranceTel: +33 4 81 18 59 30
Fax: +33 4 72 21 67 53
Miyoshi Suzhou, CO., LTD.
No.26 SUB-Industrial Zone,
No.666 Jianlin Road,
Suzhou New District,
Suzhou City, Jiangsu, China 215151
Tel: +86-512-6665-9282
Fax: +86-512-6665-9281
