It takes about 1-2 pumps to do my entire face and enough to cover areas needing extra attention too.
It dries matte and for my oily skin lasts amazingly. For a normal skin I would suggest using it alone and without a powder, but for myself (and those with oily skin) it is advisable to use a little bit along the T-zone.
It can accentuate dry patches so I definitely wouldn't recommend it for dry skins but mixing it with a moisturizer or the hydrating primer might help minimize that problem.
Overall rating? 9/10. The only downside is the patchiness I've found on drying breakouts, but it doesn't cause any problems with my skin and looks amazing!