I have been using the products (curly/straight) on my hair for the past 2 weeks, and I love the way my hair feels. I do not know how effective the product is with regards to eliminating frizz because I haven't straightened my hair recently but my hair feels much better with the product - smoother, and combs out easier. If I were to rollerset, I think it would enhance the smoothness of my hair - I plan to rollerset in the near future. When I use the straight one, my kinky hair seems to stretch-out/lengthen more than it would w/out the product. When I wash, I apply phyto 7, no frizz, and then seal the end with onyl oil or castor oil then braid/twist. My hair feels really great afterwards; I intend to add this as a permanent staple, and will update again when I straighten. I feel comfortable that it is enhancing the quality of my strands. One negative I have experienced is that my hair is naturally shiny and when I apply the product, maybe because of the color of the cream or maybe I might be using too much, my hair is not as shiny. That is why I use the oil at the end of the routine to bring back my natural shine.