I can only speak for myself of course. What it did for me early on was to nuke all my chest hairs really well, effect that happened on my entire body later on along with HRT, like 90% of everything is gone, the rest is completely female pattern or peach fuzz which is nearly transparent. Like what is still left on my boobs, its exactly like I've seen many cis women have.
But it felt like later on when I retried, PC seemed to halt my progress for a while so I ditched it quite soon. I seem to benefit much more from just ordinary boofed progesterone instead rather than topical. But it seems I'm somehow weird with this as many others have said they did benefit from it.