Has a bonus I didn't expect.
I've only been using this a few days so I can't speak to the effectiveness of regrowing hair yet, but I did get a pleasant surprise in that it made my hair appear fuller the first use.  I first put it on and it was greasy and made my hair look thinner and I thought this was going to just be something I had to live with.  But a couple of hours later when it was dry, I combed my hair and it fluffed out and actually made my hair look fuller, like a volumizing mouse would.  So now, I wash my hair, dry it, put on the Kirkland, and then dry it again and comb through, then style.  I am female and have lost a large amount of hair due to stress, to the point that my hair loss is embarrasing.  This adds enough fullness that I can style it in an updo and with a little careful combing and lifting, my scalp is no longer showing though.  Its nice to feel I look normal again.  So I'm very pleased and am anxious for the next few months to pass to see some regrowth.
Rating: 5 stars