Perfect Crystal or Crystal 251 sound like what you’re looking for- mostly vanilla with bugs fixed.
I’ll go ahead and throw out a rec for Polished Crystal also, because it’s my favorite gen 2 hack and I just think it’s neat. The PokeCommunity files are out of date, but there’s steady updates through the dev’s discord & GitHub.
Could also build your own copy from pokecrystal I guess- they have documentation for fixing the bugs in the code. But that’s definitely not low effort, lol.
Depends on what you want out of it. I use one (1) daily face lotion thing with a light sunblock in it. It helps prevent UV damage & keeps me from feeling itchy/flaky in the winter.
But I am pale as the damn grave, so someone with a different complexion might not care as much about that as a heavier duty moisturizer, for example.
It’s easy to get sucked down the cosmetics rabbit hole- you just need to decide what you actually want out of it & find the product(s) that help you towards that. That said, look for things labeled as specifically for your face & possibly unscented or for sensitive skin to start- they’ll be less likely to clog up your pores or cause an allergic reaction.