Cupping For Hair Loss

Is there any evidence that cupping works for hair loss? Have you used it or ever come across someone who swears by it?

Here is a video where cupping is said to be used. It's not in English but just look at the before and after.

https://youtu.be/Xm4GOzHsi90?si=QrAsAOshXLYfItRI&t=167

https://youtu.be/St6FkIv7qUQ?si=HUPre6JoXHKbj1fQ&t=204

https://www.youtube.com/watch?v=YXxZ_gH2Xu8

https://www.youtube.com/watch?v=tsACwwQtr-o

What do you think?

It's hard to believe, is all that blood coming from the person? Is this safe? Will it leave permanent marks? Kinda scary.

Even tho it might sound silly maybe holding a vacuum hose to your scalp will pull up the blood closer to the follicles if you can get a good seal between the hose end and the skin.