How long does it take main and tail to work?

Main and Tail work's right away! It's honestly a great product. I know people say that a lot, but it really is. I've been using it for month's now and it has shown a big difference in my hair. It make's your hair soft as a baby, no tangle's, shiny, thick and a lot more. I aboustely LOVE it. And I gaurentte you would love it too, if you bought it and used it!