Surprisingly Pleasant and Effective
I purchased this for a trip requiring carry-on only and therefore limiting liquids.  I tried it at home and was surprised that it's nice enough to consider replacing my traditional shampoos (the main ingredient in liquid shampoo being water).  It lathers nicely, cleans effectively, possibly adds body, leaves no residue, and has no yucky smell.  Obviously, you have to figure out the amount appropriate for your hair length, but a little does lather well.  You just may have to work at it for a moment, but it's not difficult.
Rating: 5 stars