What if your daily soap told a story?

Kurofune Soap blends Yokohama’s rich port history with today’s circular mindset. Crafted from used cooking oil collected locally, these handmade soaps aren’t just eco-friendly—they’re conversation starters.

Each bar is shaped like the iconic “black ships” (Kurofune), connecting the past and present through a refreshing, sustainable experience.

Take a look at how this playful yet practical project is cleaning up waste—and making waves.

Kurofune Soap

https://circular.yokohama/en/projects/kurofune-soap/

[Related Post]“YOKOHAMA CIRCULAR DESIGN MUSEUM” at LUMINE Yokohama

• Asia, Circular economy, Circular Economy Plus, Circular Yokohama, Japan, Kanagawa, Kanazawa Ward, Living Lab, Regeneration, SDGs, sustainability, sustainable living, Yokohama, YOKOHAMA Living Lab Support Office, zero waste

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室井梨那（Rina Muroi）

Rina was born and raised in Yokohama, and brings a ENG/JP bilingual edge to the Circular Yokohama team. With a background in second language acquisition and international education, she leads collaborative initiatives and storytelling projects that connect local efforts with global audiences, building friendships through circularity.

Latest posts by 室井梨那（Rina Muroi） (see all)

• Beer the First: Where Food Waste Meets Circular Brewing - 2026/1/8
• Upcycled Stationery Crafted from Discontinued Nautical Charts: From retired sea maps to everyday treasures - 2026/1/6
• Sustainable Seafood Project: Japan’s First University Cafeteria Bringing Ocean-Friendly Meals to Students - 2026/1/5