Yes thats what I was considering. Given that microneedling itself seems to have good success with some scars and improving skin, I wonder how much added benefit is the plasma, which basically triples the price of it at least. And also how long it lasts, so many cosmetic procedures only last a few months - like fillers or botox.
I am not saying that microneedling with plasma does not work at all - just sceptical about how much added benefit it has compared to less expensive methods. I mean, I looked into local prices because I thought maybe it helps with my hair loss after FFS or the visible scar at the head from the FFS or the pigment spots I have in my face in the past years, but they charge something like 500-600 EU for a session and say you will need 3-4 sessions, so thats well over 1500 EU - which is about a months salary... I would be more sure that this really is worth such an investment before making one - instead of using needle rollers (the professional longer ones of course, not the micro ones available for $15 at Amazon)
About the voice surgery experience - its also anecdotal. I have no doubt that in some cases voice surgery worked even back then, but I also know for many it did not work. I know a few who had it done and it is basically horrible. I had it done 3 years ago now and it worked pretty good. Its about the statistics in that case - if 30% are a success, that means 30% will say its a great thing and they are so happy - but 70% will say it did not work or made it worse... both of them are true.
It would not be hard to make a study on the method - take 200 women, offer them those treatments (if you want to be more scientific, give it to them for free but at the catch that 50% of them will only get needling and 50% will get needling plus plasma and they will not know which one they got), disallow them to change the skincare regimen during the experiment, do 3 treatments for each of them, document the appearance of the scar, skin and how the women perceive the progress themselves, see if there are signigicantly better changes in the group with plasma in objective measurement (documentation) or just in subjective perception.
But I doubt anyone will do such a study, because those who could do it would maybe loose money if the study shows its not that much different and they make a living selling things.