I know this was posted almost a year ago, but I have the same problem with dry hair. For me, it works well with leave-in conditioner. I was also told that Moroccan oil will do wonders for frizzy/dry hair!
I use a hair gel to get my curls in order, but it doesn't help with the dryness, only the frizz. But I recommend an over night treatment with either conditioner or oil (even olive oil works well).