I bought a pack and when I used it, I definitely see a difference right away. It brightens your skin after usage, but I don't see a last effect. This is a great mask to use prior to having an event.
This was a good morning mask for my slightly irritated skin, because it was quick (dried almost completely by 35 minutes or so) and because it was very gentle and soothing. I love the concept behind this brand, of local (Taiwanese) “farm to face” and of clean ingredients. The results were a subtle smoothing/hydrating/evening out of my skin, but nothing dramatic. I didn’t really mind the fermented sake smell, which reminded me of a certain kind of Japanese pickle, as it was fairly light and did not linger. Not sure I will repurchase, as these are a bit pricey.
It's been super hard to find 23.5N product after BeautiBi shut down, especially ones that ship from the US. I am pleased that Glowie Co carries most of the 23.5N stuff. The product is fresh too, I checked the expiration date and it was only manufacturered about 2 months ago, so it gets a big thumbs up for me!