Yes and no... Let me explain. While the opsins themselves don’t directly facilitate Vitamin D production—that’s primarily the job of UVB light interacting with the skin—they do play a role in regulating the body’s overall light sensitivity and biological responses. By potentially improving the health and function of these light-sensitive systems in the body, the Lux Vital might enhance the body's overall efficiency in utilizing natural sunlight, thereby possibly aiding in more effective Vitamin D synthesis when exposed to UVB light. This is a holistic and indirect effect, as the direct mechanism for Vitamin D production involves skin exposure to UVB radiation from sunlight. If Vitamin D production is your main concern, you may also be interested in our D-Light device.