I am an N23 in Korean cushions (on the lighter side, some N23 cushions can be a bit dark for me) and this is honestly so pretty. I got the shade Medium. If you're an N21 though, or if you want more of a brightening effect, I think I would get a shade up. It has a really nice natural tone (not too pink or yellow) and goes on very naturally on the skin (im asian btw). It is NOT full coverage so if you do have pimples or blemishes or scars, then also use a concealer. TBH, I like that it isnt fuuuuull full coverage because then I can just cover if needed, and it does look nicer and not cakey. It is pretty easy to apply even if you accidentally press down into the cushion too much. They gave heaps of free gifts too so 100% reccomend. Probs my favourite cushion now.