I've heard American Crew have a good thickening shampoo. I use Jason Thin to Thick for the time being. I like it's natural ingredients. Best thing is to cycle your shampoos because for some reason hair develops some sort of tolerance. :fun:
Rogaine has a shampoo and conditioner that I use all the time. This sh*t added a whole year of going bald and not being noticeable to other people. I had long hair though.
That vive sh*t isn't as good, I used that as my twice a week anti-dandruff shampoo, I can say after a year and a half long trial, the Rogaine shampoo and conditioner was a lot better.
I have both of those shampoos plus Pantene Full and Thick in my shower right now. I really think that Pantene Full and Thick does a great job and even better than TIGI, which I always thought was the best! I have used almost every thickening shampoo out there because I used to date a girl whose mom ran a beauty supply store. But, I would say that TIGI and Pantene Full and Thick are the best I have found so far.