I am not 100% natural, I am about 85% of my head is (the back area is). I've used the Silicon Mix, and I like it. I only used it once, and I wear a wet and wavy look.
I am completely natural and I have very thick hair. I have used the Silicon Mix conditioner and I liked it very much. The conditioner made my hair extremely soft AND shiny, which I did not expect. My hiar was also easy to comb afterwards and was very bouncy once it dried.