Review (3/5): Alright I guess
It does the job of drying your hair with minimal heat if you keep your hand on the cool setting and I do notice less frizz with it, but if you have short to medium hair it can be a pain to use and the collapsable element is great if you're packing it to take somewhere but annoying when it collapses while you are trying to dry your hair.
For the price it's probably about as good as you're going to get, but I would personally spend a little more on a more efficient diffuser.