In Indonesia, early detection of fever—a key symptom of life-threatening illnesses like pneumonia—can be the difference between life and death. However, in rural areas, many caregivers lack access to doctors and delay seeking medical attention. Lifebuoy Diagnosticker transforms an everyday product into a life-saving tool. By integrating a thermosensitive reusable thermometer into Lifebuoy’s soap packaging, caregivers can detect fever instantly. A QR code on the pack provides free access to doctors via telehealth platform Halodoc, ensuring fast medical intervention. Through on-ground activations, community outreach, and mass media, Lifebuoy Diagnosticker reached millions of Indonesians, reinforcing Lifebuoy’s mission to make hygiene and healthcare accessible to all.