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So I was initially disappointed upon getting this as it does NOT fit my conair infinitpro dryer as advertised. Even just pulling (prying) the inner plastic ring didn’t work. I ended up using two thick rubber bands to get it secure on there (works best with just a bit of rubber band sticking out). However, after trying it out on full wash day, I’m sold. It cut my dry time in half which is great as it can take hours for my hair to dry with my standard diffuser. My hair also has more volume and less frizz, so despite the initial hassle, I highly recommend this diffuser. Definitely do some googling to be sure it would work on your current dryer though! Edit: while I still really like the results, the diffuser is constantly falling off while using it because it doesn’t fit properly and it’s pretty frustrating. Considering buying an adapter but still annoyed that it didn’t fit my hairdryer like promised.