Review (2/5): Not good for coarser hair.
I have moderately coarse hair underneath & smooth, shiny, silky hair on top. I would not buy this product again. I followed the directions to a T & did see a minimal change in my hair- It was a tad smoother. Even after the 1st wash a few days later, it was still smoother & more manageable than usual. However, after the second wash, my hair was back to it's usual coarse, frizzy strands underneath.
I tried the product a second time & used more of it & left it in longer. The change was exactly the same. Somewhat better than usual through 1 wash... Not worth the time & money.