Double Award at LDK! 'Simplism Koku Gel Cream' Wins Best Buy and No.1 Ranking

The 'Koku Gel Cream' from Simplism, a brand operated by Willumina Co., Ltd. (Headquarters: Shinjuku-ku, Tokyo; CEO: Shiona Yukimura; hereinafter 'Willumina'), has won both the 'Best Buy' and 'No.1' awards in the 'All-in-One Gel' category of the women's testing magazine 'LDK' (Shinyusha Co., Ltd.) May 2026 issue, titled 'Easy Skincare with All-in-One Gels'.

In this all-in-one gel special feature, products capable of multi-functional skincare in a single step were thoroughly tested. Items available at drugstores and online retailers were selected and evaluated by reader monitors and experts across categories such as moisturizing power, ingredients, and user experience.

To commemorate this achievement, a celebratory sale offering 15% off the entire Simplism series will be held at Kagayaku Cosmetics' official stores on Amazon, Rakuten, and Yahoo! Shopping.

About 'LDK'

LDK is a magazine that rigorously tests everyday consumer goods and delivers honest, consumer-focused insights without bias. In today’s world overflowing with lifestyle information and products, LDK conducts impartial product testing independent of advertisements and online reviews. Each issue features experts and professionals who evaluate the quality of products and services across various categories.

Media Name: LDK

Release Date: 28th of every month

Publisher: Shinyusha Co., Ltd.

Official Website: https://www.shinyusha.co.jp/

Celebration Sale for LDK Awards

To celebrate the dual 'Best Buy' and 'No.1' awards in LDK, a special sale offering 15% off the entire Simplism series—including the award-winning 'Koku Gel Cream'—will be held.

Eligible Products: Entire Simplism series, including Koku Gel Cream

Discount Rate: 15% off

Duration: June 17 (Wed), 2026 – June 23 (Tue), 2026

Stores: Official Kagayaku Cosmetics e-commerce stores (Amazon, Rakuten Market, Yahoo! Shopping)

※Redirects to the Koku Gel Cream product page

Don’t miss this chance to try the award-winning 'Simplism Koku Gel Cream'.

Best Buy Award-Winning Product

Simplism Koku Gel Cream

Rich, deeply moisturizing all-in-one gel with six benefits in one

A rich, deeply moisturizing all-in-one gel featuring a luxurious 'koku' (richness), achieved by densely incorporating abundant hydration. This 'koku' comes from 59 carefully selected premium moisturizing ingredients, specifically chosen to address aging skin concerns such as dryness, firmness, radiance, and texture. With a richness akin to stew, it delivers plump, bouncy skin with luster and elasticity.

For product details, please visit the official website.

About Simplism

Launched in 2004 by Willumina, 'Simplism' is a brand centered on life cooperatives with the concept of 'simple, time-saving, instantly beautiful'. It offers a lineup of high-performance products designed for simple routines, including all-in-one gels that complete skincare in a single step. The brand has surpassed 9.74 million cumulative units shipped to date*. Simplism products are available through life cooperatives and the official Kagayaku Cosmetics stores on Amazon, Rakuten, and Yahoo! Shopping.

*Cumulative shipment volume as of May 2026 (excluding certain products) / Company survey

Official Kagayaku Cosmetics Stores

Rakuten Store: https://www.rakuten.ne.jp/gold/otohadalabo/

Amazon Store: https://www.amazon.co.jp/s?me=A1LXH5WQNRR9BZ&marketplaceID=A1VC38T7YXB528

Yahoo! Shopping Store: https://store.shopping.yahoo.co.jp/otohadalabo/

About Willumina Co., Ltd.

Founded in 1984 as a division of Nichimen Corporation (now Sojitz), Willumina has since become the top vendor in cosmetics for life cooperatives (with approximately 30 million members), providing safe and reliable products in cosmetics, hair care, oral care, and health supplements. The company now also sells through e-commerce platforms and drugstores. Its 2015 brand 'Ibiza Beauty' is a pioneer in femcare products in Japan. As a 'Well-Being & Beauty Company', Willumina aims to create a society where all women can live confidently and joyfully. It received the 'Excellence Award' in the 2025 Tokyo Metropolitan Government Women’s Empowerment Promotion Awards.

Executive Profile: Shiona Yukimura, CEO of Willumina

Shiona Yukimura served as business lead for women’s products including cosmetics, wellness, and maternity at Rakuten Market, then joined a digital marketing startup. She later worked in business development involving investments in wellness and healthcare sectors at a trading company. In 2022, she became President and CEO of Willumina Co., Ltd.

She is the Japanese representative for EY’s 'EY Entrepreneurial Winning Women™ Asia-Pacific class of 2024', a program supporting female entrepreneurs solving social issues and scaling their businesses. She is also an Open Innovation Advisor at Hiroshima University, a graduate of Keio University Graduate School of Business Administration, and a member of the Japan Association of Corporate Executives starting March 2025.

Company Overview

Company Name: Willumina Co., Ltd.

Headquarters: 3F, KDX Iidabashi Square, 4-1 Shinogawara-cho, Shinjuku-ku, Tokyo

Representative: CEO Shiona Yukimura

Business Activities: Planning and development for cooperatives, wholesale to cooperatives, brand operations, OEM services

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

Brand Websites

Kagayaku Cosmetics: https://kagayaku-cosmetics.com/

Ibiza Beauty: https://ibizabeauty.net/

Otohada Laboratory: https://otohadalabo.jp/

Willumina OEM Services

Backed by 40 years of cosmetic development expertise and strong partnerships with a wide network of companies, Willumina offers end-to-end services from marketing and planning to manufacturing and sales strategy. We deliver fast, optimal product proposals to fully meet client needs.

Service details: https://willumina.co.jp/service/oem/

Inquiries: wm_oem@willumina.co.jp

Willumina Monitor Recruitment

Willumina is recruiting 'monitor members' to participate in the development of new cosmetics and services.

Share your authentic feedback directly through surveys and discussion groups—your real voice is essential to product creation.

We offer various programs that provide a fun, behind-the-scenes look at product development.

Register as a Willumina Monitor and join us as part of the development team to co-create new value.

Learn more: https://www.kagayaku-cosmetics.