40th Anniversary: Beyond "Proportion Building" to a New Stage as a Lifestyle Solutions Company

PROPORTION BUILDING DIANA, the founding business of Dstyle Holdings Inc. (Headquarters: Shibuya-ku, Tokyo; Representative Director, Chairman and President: Mitsutaka Tokuda), celebrated its 40th anniversary on July 1, 2026.

Since its founding on July 1, 1986, we have continued to support the beauty and health of many customers through "proportion building." We sincerely thank all our franchise owners nationwide, members, business partners, and many others for their support, which has allowed us to reach this milestone.

Marking our 40th anniversary, under the group philosophy "Dstyle Benefit," we have taken a new step forward as a lifestyle solutions company that supports beauty, health, and lifestyle as one, guided by our group slogan "Beauty, Health, and Abundance for Mind and Body," our Purpose "To increase life's shining moments," and our Vision "Towards a world where well-being circulates."

Corporate Website Fully Renewed

To commemorate our 40th anniversary, Dstyle Holdings Inc. has renewed its corporate website.

The new site offers a more user-friendly presentation of our brand concept, corporate philosophy, and product/service information. You can also find information on Dstyle group.'s initiatives to achieve "Beauty, Health, and Abundance for Mind and Body," as well as special 40th-anniversary content.

We will continue to deliver enriched content as a hub for information to deepen communication with our customers.

URL: https://www.dstyleholdings.co.jp/

"40 Winners" Gift Campaign Held on Official Instagram

To express our gratitude for 40 years, DIANA's official Instagram will host the "40th Anniversary Gift Campaign."

This campaign, which allows entry by following and commenting, will award DIANA products to 40 winners, in commemoration of our 40th anniversary.

【Application Period】

July 1 (Wed) 18:00 - July 7 (Tue) 23:59

Official Instagram: https://www.instagram.com/diana_solutionforlife

The 40th Anniversary as a New Beginning

DIANA Inc. will further evolve the value of "proportion building" that we have cherished since our founding, and as a lifestyle solutions company supporting beauty, health, and abundance, we will challenge ourselves to create new value.

Moving forward, under the Purpose "To increase life's shining moments," we will continue to walk as a company that supports the beauty, health, and abundant lifestyles of each and every customer, staying close to their lives.

About Dstyle Holdings Inc.

As a holding company, we manage group assets and provide strategy and shared services.

・Company Name: Dstyle Holdings Inc.

・Dstyle group. Representative Group CEO Dstyle Holdings Inc. Representative Director, Chairman and President: Mitsutaka Tokuda

・Headquarters: 1-35-23 Tomigaya, Shibuya-ku, Tokyo Dstyle group. Building

・Customer Center (Inquiries): TEL 0120-22-8866

・Dstyle Holdings Official Website: https://www.dstyleholdings.co.jp

About Dstyle group.

This is a group under Dstyle Holdings that develops businesses centered on beauty, health, and abundance for mind and body.

・Dstyle Holdings Inc.: https://www.dstyleholdings.co.jp

・DIANA Inc.: https://www.diana.co.jp/

・DEEBUCE Inc.: https://lizera.co.jp/

・Beauty and Health and Reward Inc.: https://shiny-owl.com/

・D Succession Partners Inc.: https://www.d-scpt.com/

・DEEPRICE Inc.: https://deeprise.co.jp/

・Beautiful Life Inc.: https://btf-sanobi.co.jp/

・D Retail Creations Inc.

・DiaUNGU Inc.: https://ungu-hair.com/

・DUAL MEDICAL Inc.: https://www.mente-s.jp/

・D-LOGI LINKS Inc.