For me, frizz is a sign of dry hair and usually after washing.
The Remedy: Deep Conditioning.
I mix about equal parts full fat organic yogurt and Tresemme Naturals Moisturizing Conditioner and a dash of Yes to Cucumbers. I add a little coconut oil and nuke it for about 10 seconds... After washing my hair I will use this as a deep conditioner for about 45 - 1 hour. If I haven't yet washed my hair but feel the frizz beginning to attack I'll use it as a rinse out in the shower.
So far its been doing quite well... but if anything goes wrong I'll be the first to let you know...