I used to use missha night revolution but since they changed the formula I wasn't satisfied as I was. So I opted for this serum that also contains bifida extract. I was afraid it would give some kind of allergy but it didn't. I haven't been very consistent with my routine but I definitely can feel the difference when I use the serum/ampoule. It doesn't dry immediately after applied, so feel your skin getting plumpy. I also think it brightens my complexion. I wish I could post more after I finish the whole bottle and say if this serum is here to stay or not but at least from what I've seen i gonna repurchase. BTW, I love the rebranding and packaging is made of glass and reusable.