I have very fine, long, dry hair. I put about a grape sized amount in my hands and let it turn to oil. I started at the ends and worked my way up. Very little at root base as I have oily scalp, but dry hair. I brushed it into a high bun and left it there all day. Like 12 hours. It looked just like it would if I had put it up wet. I shampooed with the accommodating shampoo and conditioner and put just a smidge of the invisible oil in the length of my hair while wet. I let it air dry, and WOW. My hair has never looked healthier, ever. It was soft, manageable, shiny and just beautiful. Usually I wash my hair every other day based on oil build-up. But this combo has left if beautiful, less oily, and let me go 4 days between shampoos. I only washed it because I bought the full size and wanted to see if it was a fluke. It was not, this is amazing.