I don't bother using a moisturizer underneath with this cushion since it is able to hydrate my skin well.
I can't say I've tried a lot of cushions, but after a few tests with some Korean brands, this is my favourite bb cushion as it has amazing brightening effects. It makes skin looks very flawless in a natural manner.
Did a wonderful job in brightening my skin. It does not make the skin look too dewy (which can turn up oily) and I am really greatful for that.