THIS STUFF WORKS MIRACLES! Always looking for something for my long thick hair, I'm 66 and just starting to get some gray hairs. It says it helps prevent premature Gray and since that is me ( lol ) , also prevents hair breakage, I bought into this . Others say it stinks. It has a strong smell. I mixed it with liquid coconut oil and put it on for about an hour. Oddly enough it washed out easily and did not leave my hair greasy. What it did leave me was shiny, beautiful hair, no kidding! I wonder how often I can use this stuff. It does smell , like absorbing jr, to me, remember that stuff? Its OK, though, It smells fine this morning. I hope it keeps my hair dark like it suggests it will..