Korean Researchers Develop Spray That Stops Severe Bleeding in One Second

Researchers at the Korea Advanced Institute of Science and Technology (KAIST) have developed a spray-on powder that stops life-threatening bleeding in about one second ^[1].

This technology provides a critical alternative for emergency responders and military personnel in combat zones where conventional hemostatic products often struggle. By rapidly sealing catastrophic wounds, the spray aims to reduce preventable deaths caused by excessive blood loss.

The system works by deploying a powder that instantly transforms into a gel barrier upon contact with the injury ^[1]. This immediate seal is designed to halt the flow of blood from severe wounds almost instantly ^[2]. While some reports suggest the process can take up to one minute to stop excessive blood loss ^[5], primary research data indicates the seal forms in approximately one second ^[1], ^[3].

Developed on the KAIST campus in South Korea, the spray is engineered for durability in extreme environments ^[2]. The researchers said that the gel remains effective after years of storage in harsh conditions ^[1]. This stability makes the product viable for long-term deployment in field kits where temperature and humidity fluctuate.

The project focuses on providing a rapid hemostatic solution for injuries that are typically difficult to treat with standard bandages, or tourniquets ^[1]. The goal is to provide a bridge between the moment of injury and the arrival of surgical intervention, particularly in high-stress environments where every second is critical ^[4].