M.L.
I'm a hairstylist in Houston and the best thing for around here, land of frizz and high humidity is Moroccan Oil products (pretty expensive).. but very concentrated so you don't need much.
One good thing that isn't *too* high priced is Sebastion's Potion 9. It comes in a spray and in creams. The cream is going to have more power for thicker, coarser hair and the spray is best for finer hair.