In fact , the wavelength of light used to active the chlorphyll - derived photosensitizer used in CLT is incapable of penetrating tissue more than several millimeters .
Much of their claims of effectiveness were based upon anecdotal reports , not research .
The wavelength of light used to active the chlorphyll - derived photosensitizer used in CLT is incapable of penetrating tissue more than several millimeters .
Much of their claims of effectiveness were based upon anecdotal reports , not research .