Chlorin e6 is widely used in photodynamic therapy (PDT) for treating various types of cancer, including skin, lung, and esophageal cancers. It acts as a photosensitizer, which, when exposed to specific wavelengths of light, produces reactive oxygen species that destroy cancer cells. Its ability to selectively target tumor cells while sparing healthy tissue makes it a valuable tool in oncology.

In dermatology, Chlorin e6 is applied in the treatment of acne and other skin conditions due to its antimicrobial and anti-inflammatory properties when activated by light. It helps reduce bacterial load and inflammation, promoting clearer skin.

Additionally, it is utilized in antimicrobial applications, particularly in disinfecting surfaces and treating infections. When activated by light, it generates reactive oxygen species that effectively kill bacteria, viruses, and fungi.

Chlorin e6 is also being explored in diagnostic imaging, where its fluorescence properties aid in visualizing tumors and other abnormalities during medical procedures. This enhances precision in diagnosis and treatment planning.