Tried it, totally worthless unless you're using it for an acute fullness for going out or something
If you talk to them first they tell you that you need 1.5ml per head 2x a week, then they'll say 2ml, then they say you keep upping it every couple of weeks til you're doing 3ml per head 2x a week for 16 weeks.
You get an insane fullness within minutes, later it hurts a lot and is super hard to straighten your arm out but they look an inch bigger. In a day or two you get the red puffy look, then all the effects start to disapate so it's time for the next injection
If you did it once a week your arms would be back to normal after 4 days. You get a good 12-24hrs where your arms look good tho. No actually growth is there once you start taking it