I never went as far as to defend Gwyneth Paltrow, but after her Hot Ones appearance I created a post (which I will link in the comments) where I suggested that she's done no more harm than male grifters and that the dislike of her as a person was primarily due to misogyny. That's before I learned about her promotion of these unproven "vampire facials". Now an unlicensed clinic performing this procedure has given at least three women HIV. You guys were right and I was wrong.
So? When done safely perhaps it offers no benefit and very little risk - kind of like a tattoo
Maybe it does work. We don't know.