On recommendation from HG and a friend, I tried the Kerastase Vernis Nutri Sculpt this summer. But while it did deliver shine and made my hair feel soft, it also seem to make my hair feel more heavy. So I'm not a great fan of it now, perhaps I should save it for the winter months when my hair will need maximum protection from the heaters.....Currently I am using the Biosilk Silk Therapy Serum, which I've heard many swear by. It indeed defrizzes and softens.... but I personally don't find it as spectacular as the talk made it sound like. Especially for that price, I'd rather get my old one...
....which was the Bain de Terre Recovery Complex, Silky Shine Serum. Similar effect with a marginally lower price tag, I liked this one better because I felt like the texture had more consistency. Once I forgot to shake the Biosilk before I used it and a whole load of liquid came pouring out, catching me completely off guard.
So here is my tidbit on hair serum, from my very limited experience. What does everyone else use in an attempt to achieve the shiny smooth hair?