I've tried many products on my curly, frizzy, highlighted, dry hair. My hair is fine, but I have a lot of it. I received a sample and used it on a whim... I KEEP GOING BACK TO IT! I'm researching buying the full-size! It says to rinse it out, but the sample says to leave it in... I leave it in, and it leaves my hair SO soft and FRIZZ FREE! It takes away the frizzy volume and leaves soft, light, strands that you can run your fingers through! I'm going to try the purple intensive conditioner sample as well, then make my full-sized purchase!!