Miyoshi America, Inc., along with the Miyoshi Kasei Group of companies, is the global leader in the development and manufacture of surface treated pigments and mineral substrates for the cosmetics industry. Established in 1985 as a wholly owned subsidiary of Miyoshi Kasei, Inc., Miyoshi America, Inc. has built on Miyoshi Kasei’s invention of the silicone surface treatment for cosmetics back in the 1970’s.

Miyoshi America, Inc. has leveraged its expertise and proprietary technologies in surface treatments to develop superior products for color cosmetics and skin care:

  • Breakthrough Surface Treated Pigments
  • Innovative Functional Materials
  • Easy to Use Dispersions


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.

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.

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.

Treating “People” Right

We comply with all concerned regulations around our business circumstances and ensure to operate business with respect for human rights.

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.


The Miyoshi Kasei group, with headquarters and plants in the United States, France, Japan and China, provides global reach and regional service to the cosmetics and personal care industry. Miyoshi America, Inc, located in Dayville, CT is not only able to offer innovative products for North American trends, we are also able to provide customers with products and insights on product trends from Europe and Asia. Our global teams work closely together to provide support and solutions to customers with multiple geographical locations.

Miyoshi America, Inc.

110 Louisa Viens Dr. PO Box 859
Dayville CT, 06241, USA

Tel: +1-860-779-3990

Application Lab & Sales Office
711 Executive Blvd Suite S, Valley Cottage,
NY, 10989, USA

Website: https://miyoshiamerica.com/

Miyoshi Europe

5, Rue Paul Rieupeyroux, 69800 Saint-Priest, France
Tel: +33 4 81 18 59 30 Fax: +33 4 72 21 67 53

Website: https://miyoshieurope.com/

Miyoshi Kasei, Inc.

Head Office
4-3-14 Ichigaya Grassgate-5F, Kudankita, Chiyoda-ku,
Tokyo, 102-0073, Japan

Tel: +81-(0)3-6265-6757

Website: https://www.miyoshikaseigroup.com/

Iwatsuki Plant
3-8-1 Ueno, Iwatsuki-ku, Saitama-shi, Saitama, 339-0073, Japan

Tel: +81-(0)48-689-3581

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

Website: https://www.miyoshikaseigroup.com/


Miyoshi Group has established “Miyoshi Group Corporate Social Responsibility Charter” in order to clearly communicate our responsibility and commitment for society, environment and all stakeholders, in which we pledge the followings in order to realize sustainable society.