T.W.
I have thick wavy hair. Try Moroccan Oil, it's a great hair product that doesn't make my hair greasy, oily or weighed down...just smooth, soft and no frizz. The difference between this product and some others I've tried is it's just oil based, not silicone which always made my hair greasy and oily after a day.
The bad part is it's not cheap, my hairdresser gave me a sample and I bought the travel size rather than a big bottle. I use a very small amount and it lasts a very long time.
*Also want to mention that I feel the need to wash my hair much less often with this product!