I'm half black and half Asian, so I have very long, very thick, course black hair. I have tried many different products, and most of them don't do anything for me because my hair is so resistant, but I actually noticed a difference with this one. I used it for a while a couple years ago, and I liked the way it made my hair feel, but I eventually switched to a cheaper brand. At the time, I didn't really notice a huge difference, but now that I haven't been using it for almost a year, I can see the difference in my hair. It is much frizzier and harder to manage than it had been when I was using this product. I hope to switch back soon. My only complaint was the price.