Product review (4 stars): Good product.
Learning curve, so it will take me awhile to master it; soooo glad that I bought the one with both brush heads.  My hair is very fine, and the larger one didn't do much for me.  It is easy to  use.  I will have to try some root lifter and volumizing mousse to see if that helps.  I may even need a 1" product, but we'll see.  Great value for the two brush heads.