Works well as a *travel* diffuser
I bought this specifically so I didn't have to haul my big ol' plastic diffuser (or worse, the diffuser AND the hair dryer) around with me when I travel. I definitely echo the reviews that mention how easily it collapses - that's great for stuffing in my makeup bag, but is what I'll call "less than optimal" when I'm trying to diffuse the back of my head. It fits on my Revlon 1875 Infrared, which has a notoriously weirdly-shaped barrel, and actually does a good job diffusing, almost surprisingly so. Obviously you'll have to handle it a bit more gingerly than a normal, non-collapsing diffuser, but for the price - and for not having to take up precious suitcase space - I'll deal. Would I go insane if this was my daily use diffuser? Probably, but for the purpose of using it a few times a year while traveling, it'll do just fine.
Rating: 5 stars