The trick I have is to not touch it. Leave it alone That way the hair doesn't separate. If you are out and find its going frizzy, you can always put some sorbolene lotion or some conditioner straight onto it to smooth it down. I carry a small thing of leave in conditioner for humid days.
Definitely! I never touch my hair, I've had to train myself not to. I always carry a small bottle of moisturiser around for my hair. Living in Cairns where it's always humid, I live with frizzy hair 24/7 and it's so hard to maintain sometimes.