E-Commerce Site & Package Design for the Supplement Brand "Yoiemon"

Designed the package and e-commerce site for "Yoiemon," an acetic acid bacteria supplement for business professionals who often drink for work, and handled the site's implementation end to end.

EC Site / Package Design

2026.09.03

Production Period: June 2025 – September 2, 2025 (ongoing operation and improvements continue after launch) Publish Date: September 2025

Site: Yoiemon Official Site

Background / Request

Hangover-care supplements often lean on a lighthearted tone, but the client wanted a look and feel that would earn the trust of professionals who drink for work — one that reads as genuinely credible. It also called for a production setup that could keep the package and the site consistent with a single brand world.

Key Features

・Product detail pages that carefully communicate ingredients, nutritional information, and usage

・A customer reviews section that addresses pre-purchase concerns

・SHOPLINE-based e-commerce functionality with member registration, cart, and checkout

Design Approach

Rather than the lighthearted tone common to hangover-care supplements, we built the design around a sense of authentic Japanese craftsmanship. The package conveys trust through its tactile quality, while the site's structure carefully addresses pre-purchase concerns. We made sure the brand message — "For the warriors who'll fight hard again tomorrow" — comes through consistently from design to implementation.