Review (3/5): great diffuser with a fatal design flaw (and misleading name)
It's probably a very good diffuser, but it doesn't stay on my Bespoke Labs blow dryer. This seems to be a common problem. The device just should not be labelled "universal". I don't even see how it could stay on any blow dryer; there's only tiny little bumps inside of it to cling to the nozzle. Just a fatal design flaw.
I'm using it, reluctantly. I have to use two hands to hold the diffuser on the blow dryer. It's a nice big diffuser with nice long prongs. Too bad about the design flaw.