"皮なめし" (kawanameshi) is the Japanese term for leather tanning, a process that transforms animal hides into durable leather. This technique involves treating the hides with various substances to preserve them and enhance their properties, making them suitable for various uses, such as clothing, accessories, and furniture. The tanning process can be done using different methods, including 植物性なめし (plant tanning) and 化学なめし (chemical tanning). Each method has its own advantages and characteristics, affecting the final texture, color, and durability of the leather produced.