Blue Light Special

I'm in the pretreatment 90 minute waiting period,

at the dermatologist, prior to receiving their Photodynamic "Blue Light Special" Therapy. *Then* they "burn my face off" (my words). They applied a special solution to my face, that will bind to the precancerous cells in the skin. Then they will hit my face with a strong blue light, which will kill the bad cells. The goal is to hopefully avoid having these cells go bad on me in the future, because they won't be there any more. This is supposed to be much more effective, than running around my face with liquid nitrogen, and burning individual spots away.