I'm assuming you applied the progesterone to the testes because it circumvents the "fat can retain progesterone for a long time" idea?
What do you think about wrist application?
I mainly did it for improved absorption, though in calibrating against injections it looks like absorption was only about 10%, which is supposed to be typical for for hormones on skin elsewhere. But articles say scrotal skin can have absorption rates up to 60%.
Was there ever any solid evidence to support the idea of progesterone accumulating in fat? I remember that it's been mentioned a lot, but I don't recall any attribution except maybe that some doctor said it.
I'm sure absorption via wrist and/or forearms is possible. In the end you just have to try it and then compare serum levels to baseline.