The dewpoints where I live have been close or at 70. My 2nd day hair is a mess and my first day dies after being out a lot.

I'm still working on this. Eyeing silicones for this dreadful weather
2/c. Coarse hair med. density.
Protein sensitive but can use occasionally
Highly porous. Color over grey.
Best 1st day method: Smasters!
Stylers: Mix Curls in a Bottle into everything for shine. Terrible pj
Sometimes try roller sets or use a curling brush - classic glamor.
Every day is a gift