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I recently bought some Babyliss root boosters after thinking about it for a while. They take some getting used to but once you get a feel for the technique they are pretty simple to use to either crimp your full head of hair (this takes a while with the plates only being small) or add volume to your hair by crimping sections. I found the best way to add volume to the hair was to crimp hair (beneath the first layer) in small sections, spray with hair spray, slightly back comb then place and style the top layers over. The difference is quite subtle but definitely noticeable. Recommended product! :)