The high seas are vast and valuable areas beyond national jurisdiction, covering more than two-thirds of the Earth's surface. With increasing human activities and the potential for hazardous substances to be discharged into these waters, the need for effective regulation has become paramount. This paper aims to analyze the international law and policy frameworks that govern the regulation of hazardous substances in high seas waters. By examining key conventions, agreements, and initiatives, it seeks to assess the current state of regulation and identify areas for improvement. The paper also explores the challenges associated with implementing and enforcing regulations in this complex and dynamic environment.