So far all good
I've been using this product for a month now, and within a week I found a noticable reduction in how much hair come out during a wash (have only had one wash in the last month where a scary amount came out of my head) so I believe its working.
I use it 2-3 times per week, as I wash my hair twice a week and normally squirt it in mid-week in hopes that will help. I use it on towel dried hair after a mask and massge it in for 30 seconds (should probably do it for longer, who knows).
I haven't found it to leave my hair greasy, sticky or flat so it doesn't impact your volume (mine goes a bit fluffy anyasy - fine hair life).
So I would recommend and I hope it will continue to help over the next two months of use. I'm also using silica hair & nails vitamins hoping that'll help regrowth (thanks years of work stress).