I recently explained and linked all topical ingredients I'm on right now. No science jargon, just what does which thing and where to get them. Sourcing isn't difficult mostly. Understanding the effects can get complicated, Lotus is awesome putting out the in depth science about it, I'm blunt with it and only explain the simplest way how it works.
You can get progesterone cream and DHEA from iHerb for example. They're US based so if you're around there its super easy. And they deliver to Europe too. Sourcing progesterone capsules is bit trickier as that goes to grey market HRT, but that's easy enough to find with a search or too. Check DIY sub reddits for MtF HRT for that.
Awww, Wee2er, someone has to dig up everything and leave nothing to guesswork.