Yes to both. Now keep in mind that I've been losing my hair gradually for at least 20 years, so I'm not going to regrow a lot of it. However, after being on my regimen for about 6-8 weeks I experienced a very noticeable drop in shedding, down to losing very few hairs in a day. Then I noticed that my hair started thickening, and in the last few weeks I've noticed the beginnings of regrowth. I don't know how much regrowth I'll have, but my regimen is definitely making a difference. If you check my regimen, however, you'll see that it's very aggressive, so it should accomplish something. Actually my goal is to make sure I can at least maintain, and hopefully regrow as much as possible by this summer, at which time I'll probably go for a hair transplant. I emailed Dr. Bradly Wolf pictures, and he estimates I'll need 1200-1500 grafts to rebuild my hairline. I didn't want to bother with a hair transplant if I can't at least maintain what I've got, since I don't want to be doing a hair transplant every few years, and I don't want to transplant hairs that I can regrow. Hence the rationale for going to a very aggressive routine.
Because my hair is wavy/somewhat curly and fairly light in color and pretty close to my skin color, and because of my age (48), Wolf said that I'm an ideal candidate for a hair transplant. I should be able to maintain what I've got with my regimen for the foreseeable future, and I get good scalp coverage with a hair transplant. Guys who have fine, straight hair and a big contrast between hair and skin color need much denser "packing" of transplanted hairs to get the same scalp coverage.