If we are talking about light coloured, the type of “peach-fuzz” hair, we could say it is almost certain it will cause more hair. My dermatologist told me that it happens 99% of those cases and that she wouldn’t dare touch thin, light coloured hair with a laser.
I agree that thin, light colored hair probably won’t respond to a laser. But I would not agree that treating it will cause more hair 99% of the time.
You’ve quoted your dermatologist already once, attributing information to her that I thought was incorrect. I asked you who this person was putting out that information (I wished to discuss it with them physician to physician) and you chose not to respond. I would appreciate if you are going to make statements about something that “you say” a physician said (thereby implying that your statement must be correct) that you supply the name of the physician. Otherwise, I am left to believe that you are just making this stuff up. And if so, I would appreciate you not doing it anymore.