I used three different type of galactomyces essence so far. My absoulte favourite is the COSRX Galactomyces Essence. This one is almost as good, but the texture of this one is not as smooth, it doesn't make my skin as hydrated as the COSRX one. One bottle lasted one month, I used it day and night. In my opinion if you want a galactomyces essence, buy the COSRX, the price is better, it wil last longer, hydrates better etc.