I used to have one of those, years ago. It looked completely rediculous on. I would not work with say I style my hair now, but I used to just wear my hair in a wavy-ish style, so I would put mousse or gel in it, then put it in a loose bun, and then put the dryer thing on my head while I did my makeup. It worked okay to get my hair partially dry. But now I play up my ringlets as much as possible, so I like a regular diffuser. But thats a good idea about a deep treatment...maybe I will pull it out for my next one.