OP with an early update:
I ended up purchasing two types of glow serums.
This one, recommended by a PP here:
https://www.paiskincare.us/products/the-impossible-glow-bronzing-drops
And this one, that I think I found on Reddit:
https://www.amazon.com/dp/B09DLFCB69?psc=1&ref=ppx_yo2ov_dt_b_product_details
I got the Pai one in the rose gold. I think I like it? It definitely makes my skin look more even. But weirdly I think it washes me out a little? I feel like I need another makeup to add some color back into my skin - when usually my issue is too much pink.
I'm going to keep trying it because I am not sure I'm "reading" it right - I might just need to get used to what I look like in light makeup.
It did not irritate my skin, which is a HUGE thing for me.
The Beauty of Joseon serum has no pigment. I do think it makes my skin look a little more glowy. That might be my mind playing tricks on me. Anyway, it also hasn't irritated my skin.
I used the two serums on different days. I'll keep experimenting with them to see if I do end up liking them in my daily routine.