This project transforms cashew nut husks, an underused agricultural waste, into a natural alternative to toxic chemicals used in traditional leather tanning. By extracting tannins from the husks, it offers a safer, eco-friendly process that reduces water pollution and health risks for tannery workers. Designed for affordability and scalability, especially in low-resource settings, the system promotes circular economy principles while creating green jobs. It offers a practical path to more sustainable, inclusive leather production