Let me begin with saying that I'm 17 years old and that this is the first foundation I ever purchased about 1,5 years ago. The bottle has lasted me ever since, even though I haven't used it every single day, simply because I didn't really get hold of the entire foundation-thing when I bought it. Nowadays I use it every day, and if I have a good skin day, I'll mix it (about 50/50) with my Clarins Daily energizer cream. If I need a little more coverage to cover up any redness than I'll just use the foundation by its own. I have tried different ways to apply this, and have found that the Real techniques buffing brush works best for me, although I use a stippling motion to apply the foundation. This foundation does not break me out nor irritates my skin even though it's insanely sensitive and very prone to little irritated bumps. It moiturizes my skin nicely and leaves a very natural and slightly dewy finish. I do have to powder if I want it to last all day, or use a primer underneath. If I need it to last all day (from 7am to 6pm) I'll either use MAC Select sheer (NW15), Rimmel stay matte or the Clarins Beauty flash balm as primer. The only downside to this foundation is that the shade I'm in, which also is the lightest one available where I live, FF202 Soft Beige, is a little, little bit to dark for me. I'm an NW15 in MAC foundation and powder. Despite this, I just solve this problem by taking the foundation down my neck, and even if it's a little dark, it blends wonderfully into my skin. BEST FOUNDATION, by far!