Does anyone have experience with the Rogaine or Nioxin products for thinning hair? I happened to watch a video I sent out recently and was horrified to see that when I bend my head down I see lots of scalp. It looks like I'm going bald from the top down. I don't want to get my hopes up in case it doesn't work, but Costco has positive reviews for the Nioxin shampoo/conditioner and the Kirkland brand Minoxidil product (basically Rogaine's formula) in the foam and liquid applicator. Is there any hope?