I'm sorry Jerry I don't. And wasn't with my husband when he was treated for the skin cancer on his face. So I only got the watered down version of what the Dr. said back then. My hubby explained that the Dr. said the cream would remove the precancer cells and not harm his skin or good cells.~shrug~. I do know that it made his face very red and raw looking. It looked painful but hubby said it didn't hurt just looked bad. I can ask our Dr.s now if they can find it in the records we requested from the Dr that treated him for the skin cancer.
we won't see our Dr's till Monday but I'll try to get back to you with an answer after that. BTW after the bright red raw look went away he's skin looked awesome!smooth and even toned. No blothces or any of the dark spots from too much sun remained.