I am 31 and started noticing fine lines in my mid twenties. I realized a few years ago that my skin is not going age well and that I needed to take some serious preventative steps to keep my skin looking average, at best. I have dry, sensitive skin and am prone to acne along my t-zone, so the thought of adding an additional product to my daily routine was really unappealing. I used cc cream with spf for awhile, but could see that it wasn't enough if I was outside for more than a few hours. I tried at least a dozen different products before reviews led me to this. It doesn't make me shiny, it doesn't smell overwhelmingly of sunscreen, and it doesn't bother my sensitive skin or make me break out. I use this every day and a bottle lasts for a few months. Very happy with this find.