Using this dryer with the diffuser is a bit like standing next to a running turbojet engine while holding an antique phonograph horn over your head. If you straighten your hair, you may appreciate the strength of this one. My problem with it (in addition to the fact that this damages my hearing every time I use it) is that the "low" heat is hotter than any other dryer I've used, and it's easy to burn my non-sensitive scalp. Also, the diffuser can suck in my hair, getting it tangled in the metal that lines the diffuser. On top of that, this feels like it weighs as much as my vacuum cleaner. I hate this thing and I'm very sorry I purchased it.