Only been using this for about 20 days but so far so good. Bought a much more expensive niacinamide product through Paula’s choice and this seems as good, and better value. It feels a little greasy going on but that doesn’t last and I feel it makes more pores finer - I have open pores on my nose and redness and I feel both are looking less obvious. Bottle works well with pipette. I use the vitamin c whip cream after and both products sit under make up quite well. I have greasy skin and it doesn’t make it much less greasy, but slightly finer in texture and not bad on those fine lines creeping in.