I've been using a sample for about 2 weeks. I have combo skin, and I think it makes a tiny bit of difference cutting down mid-day shine. I don't notice much "blurring" but it is a nice makeup primer with great spf in it. I did use it a few days on its own instead of moisturizer, but it is not moisturizing enough on my skin for regular use that way. It does have a mild chemical smell that wears off quickly and does not bother me too much.