As I have gotten older I have found that you can't just get by with $3 health and beauty products, whether it's moisturizers, hand creams, soaps, or shampoos.  There is a reason the cost is so low.  Yes, it is sometimes hard for someone frugal like me to splurge on something like this, but I always forget that it really does last a long time for the price.  I already have think hair but I suspect that this will help maintain that fullness and body.  Can I really evaluate it's true thickening potential, probably not, but it is still a great shampoo.  I'm a hair gel guy and some shampoos have a hard time getting that "feel" out of my hair.  JB has no problem.  I recommend the standard lather, rinse, repeat.  This shampoo has a pleasing scent that is both clean and masculine.  A little dab will do the trick.  After washing my hair feels great.