Review (5/5): This was a steal at this price!!
Eeeeeeekkk I'm so excited about this!! I love my Dry Bar Buttercup hair dryer, but really wanted a diffuser for it because I like to scrunch my hair time to time. When I added it to my cart, it was $21 I believe. That's still cheaper than Sephora so I was going to get it but waited. SO GLAD I DID. Randomly, it dropped to $12.12!!!! Purchased immediately!!
It fits my hair dryer perfectly. But, I can tell by looking at it that my hair dryer isn't a standard size on the end so I had to purchase the Bio Ionic brand since that's who makes my hair dryer. Worth it! It says universal, but I would still take measurements to make sure it'll fit yours if it isn't a Bio Ionic brand because they are not ever all universal.
The part that attaches to your hair dryer is not a hard plastic- it is rubbery (but firm) so it slides onto your hair dryer but doesn't "click" into place. I think that's why they say it's universal because this allows for some difference in the size of your dryer. But still do your research and compare your hair dryer to the size of the Buttercup hair dryer because it fits it perfectly.
You can also twist the diffuser to open up the vents or close them to control the air flow (see pictures). There will always be air flow on the outer ring of the diffuser, but you can completely close off the center, which is nice if you don't want a ton of force.
I love it and it was completely worth it!