Just put some mustard on your head, lol. Mustard plasters work by dilating the blood vessels to promote the increase of blood flow to the surface of the skin. But keep in mind, If you have androgenetic alopecia it wouldn't work without antiandrogens.
UPD: Sorry, I haven't watched the video, but if it's about rubbing your fingernails to improve hair growth, then you should know that unscientific bullshit wouldn't work.