Recommendations for Japanese/Korean/Taiwanese Makeup Products?

hello lovely ladies of r/asianbeauty!

so im going on an asia tour soon and i was hoping to get some recommendations for essential products to pick up in each country. all my life ive used mostly western products so im kind of out of tune with asian products (especially taiwanese products.. i have no idea what to look for there haha).

ive been watching a few gurus though and so far im hoping to haul me some 3 concept eyes (thx jenn im) but otherwise i have no idea where to start! im looking for mostly makeup cause my skincare routine is pretty much inflexible (thx derm..).

i would especially like to know about brands that are difficult to get in canada (like 3ce)!

any help much appreciated! :^ )