Not a bad product, but I've used better.

This was a freebie, and it took a bit of research to figure out what this mask did! This is a whitening mask by Japanese brand Kose Cosmeport, with vitamin C as the active ingredient. There are a few different whitening masks from this brand using different active ingredients, but this one is apparently targeted at freckles and other 'spots' that show up on your face. It mask applied fine, and the serum wasn't too thick or too runny, and I suppose it did 'lighten' or brighten my skin a bit. However, my acne scars/post acne marks did not seem to be any fainter, so I was a little disappointed at that. All in all, not bad, but there are probably vitamin c masks out there that work better (and are cruelty-free).