I have crazy combo to oily skin, especially in the summer. I put this product to the test and it failed miserably. In the summers I stick to a very lightweight moisturizer and then a tinted moisturizer on top. Even with just two products on my face I will still get shiny by the end of the day if I don't blot/powder my face at intervals. I was hoping this would save me from having to take that extra step with blotting and powdering but it didn't. I don't know if it was because I used this as a primer and then put on my moisturizer and tinted moisturizer on top? I'm not sure, but I don't even want to keep testing it out.