My interpretation of the results that this shampoo provides may, admittedly, be subjectively biased... that is, it's possible I see what I want to see vs, whatever the reality may be. However, that said, I do genuinely seem to see the desired result of a thicker head of hair. This is important to me as I turned 50 this year and so I'm right on the cusp between the ages that one typically has a full head of hair, and the age where one often begins to lose his hair.
It smells nice, cleans well, and again, does indeed seem to provide what the shampoo was designed for... to thicken thinning hair.