As I've mentioned in some of my other JB reviews, I am doing this review from the stand point of someone with thinning hair, short cut hair.  The positives about this shampoo is this bottle will last me a long time.  I've used it for over a month now and I would say I'm about a fifth of the way through the bottle.  I imagine, someone with thicker, longer hair will run through the bottle more quickly.  It is very light weight, and washes through easily and leaves my hair feeling clean.  The negative on this (and this is purely subjective), is the scent.  It has a citrus smell, specifically lemon.  I question the decision on this particular scent because it reminds me of lemon scented dish washing soap.  It even has the same texture.  Curious.  I didn't give it 5 stars because of that, but would have given it more of a 4.5 if I had the option.  Price is a little high, but most "designer" shampoos are running about the same.  The chances are if you are looking at JB products, the price isn't a deal breaker for you.  Where I don't believe my hair appears thicker, that is the fault of genetics, not this product.  My hair is definitely clean and manageable.