Hi guys ..very interesting ...had a look at the site .... I can see how it could definitely help to make an area of thin hair look denser. My main concern would be the cost of it... I `d imagine quite expensive ....I didn`t see any coverage of the price on that site and it looks `` glossy`` to me [i.e. `expensive`] The concept is fine..I can see how it would really appeal to younger guys who can get away with the shaved head look ...as Henry said there.. I`d NEVER shave my head... it really suits some guys [usually younger] but wouldn`t suit me at all... I have noticed when I colour [ actually the `American` spelling of that word is `color`I think ? ] my own hair with a stylists colouring product [Black] the scalp also darkens for a few days and the hair does indeed look a lot thicker,so it could be quite a good plan if you were willing to splash the cash.... thanks for that info guys...very interesting. Paul.