Bought this for my three year old son, who has autism. I already had a plain plastic tangle, and I thought the extra sensory experience provided by the 'hair' was a nice idea.
We received it four days ago, and my son hasn't put it down since, he loves it. As does my six year old, who has made me promise I'll buy another for him. I love it too- if my kids aren't playing with it, then invariably I will be. It's quite addictive.
The only thing I would point out is that the pieces do come apart when pulled. They'll clip back together easily enough, but they're small enough to present a choking hazard for younger children.