Composed of oils such as fish, vegetable, or sulfated castor oil, natural-based fatliquors are prized for their high compatibility with biological processes and ease of biodegradation. They restore fiber elasticity and impart a natural feel to leather, making them ideal for high-quality, environmentally conscious leather goods. As demand for bio-based inputs rises, producers are enhancing the stability and shelf-life of these fatliquors without relying on synthetic preservatives or toxic emulsifiers. Cold-processing capabilities and enhanced penetration properties further support sustainable manufacturing practices by reducing energy needs and water use. With growing pressure to eliminate substances of concern from leather goods, sourcing platforms are essential in connecting buyers with verified natural-based fatliquors and ensuring alignment with certifications like Leather Working Group (LWG) or ISO standards. These networks support traceability and transparency, helping buyers integrate sustainability into every stage of product development.