I have straight, shoulder length hair that has average thickness. I needed a product that calmed flyaways in the winter and frizzies in the summer while adding shine. This product is it! It calm my hair, makes it shiny, and smooths it. It smells kinda weird in the tube, but dissapears immediately, and only a tiny dab will do ya (I think this tube will easily last me a year). I took off one point because it weighed down my hair when I put too much on, and I don't know how it would work for curly hair.