I have been using this for almost 3 years. I have very, very oily skin that is somewhat acne prone and this makes my skin look almost flawless! I had a huge problem w/ acne about 2 years ago and still have some light scarring which the Colorstay covers up/evens out nicely. I get many compliments on my complexion when I use this. This helps keep my skin matte throughout most of the day and it doesn't break me out. I apply it w/ a sponge for a more sheer finish b/c it is a medium-heavy coverage base.