I bought this on a whim after seeing it on Youtube (recommended by my favourite youtuber...) and wasn't too sure what colour to get. Long story short I spent about 2 hours researching whether it would match NC20 (ish) skin or not through youtube reviews, reddit, online reviews, hwahae app and really couldn't find something that was able to make me feel reassured i was buying the right colour. Many people seem to have really light skin (and reviewed the lighter shades #2 or #3) and there just wasn't anything out there on #4 - probably also because this was only released in Korea around 2-3 months ago. ANYWAYS. I tested this as soon as it arrived and was really nervous because I needed to go out and it's actually a really decent match! for reference other cushions/foundations i've used that match my skin colour include: Laneige whitening bb cushion #21, Giorgio Armani Luminous silk #4, Mac waterweight NC20. Hoping this is helpful (and pls note the back of my hand is darker than my face)! p.s. don't stamp the puff because you'll end up with a LOT of product, just tapping it lightly gives me enough to cover about half my face.