It's hot..hotter than we are used to in England.
I have normal/combo skin which means that heat and me don't mix.
This is what I'm using to keep my skin from looking a hot greasy mess and it's working brilliantly.
I used a primer when I went to the Body Shop bloggers event and it really highlighted dry patches that I didn't know I had. Since that day, I've just been using my foundation alone and it's served me well.
The toner is one of my saving graces, I just whack it on..wait for it dry, put my moisturiser on, let it sink in and then apply my foundation. It stays put all day, doesn't apply in a streaky manner and gives me a dewy finish without making me greasy. The eye roll on is there simply to provide extra moisture as the air conditioning at work has a habit of drying my eyes out.