This is my hair after walking in a parade in West Texas this morning (walking and running to hand out flyers and then get back in line.) Then I went to a Zumba event. Outside. On pavement. 90 degree heat. Over an hour outside (no shade in West Texas!) There's not a lot of humidity here... BUT it was a high energy zumba session and the MAIN place I sweat is in my head. I will also add that I was SWANGING my hair too.
I'm natural, and I don't straighten that often. And I'm not particular good at getting my hair really straight at all.
All of that to say... Living Proof No Proof Styling Cream is the shizzz. I also used a little KeraCare Oil Sheen/Humidity Block, but I think the trick was in the Living Proof.
Check out the pic after major exercise, major sweating on a HOT day! No Frizz, No Poof!