I've been using this for almost two weeks now. I have to say I'm surprised that I am seeing some changes in my hair so quickly! I have noticed significantly less hair in my brushes, combs, and in the shower. This product took a little adjusting to as far as how much I should use. It is an oil so just the smallest drop in the palm of my hand is all I need. Then I dip my finders in the drop and rub it in the areas that are thinning.