Im using silicones after every wash. I use CHI Karetin Mist, CHI Total Protect, and CHI Silk Infusion. I'm finding that I love the use of silicones on freshly washed hair so much better than oil. Detangling is a breeze, hair breakage is minimal, and my hair is soft, moisturized and not oily feeling once it dries.
I do still use natural oils during the week to seal in my moisture and I wash once every 2 weeks with shampoo.