I don't really understand the purpose of this product. I shower at night, so I put it in my hair once it is dry, then go to bed. I don't wash it out in the morning, it stays in all day until I shower. I use it 3 times a week, like it suggests, and I do notice that my hair is a little thicker with it in. But I don't really care about that. It is packaged nicely and the pump pumps out the perfect amount of product. I use 2-3 pumps each use. Once you start running it through your hair it STINKS! Like it stinks strongly of fish or any type of seafood. It is disgusting. The scent is only around when you are rubbing it in, you can't smell it on your hair. Wash your hands after or you will keep smelling that fishy smell. At this point I am using it to get rid of it. It's a waste of time. You can find something that's cheaper and doesn't stink if you just want your hair to be thicker.