This worked perfectly with my daughters blow dryer. This is a big size so worked great on her hair. She really likes using it.

I have never used an at-home curl diffuser. The diffuser fit my type of blow dryer, they note in guide which dryers are compatible with this product and which are not. The guide also shows there are adjustable venting options for more or less air. However, they don't say how to actually use the product live in the guide. I usually sit under a hair dryer at the salon to dry my curly top, so I would have preferred more directions in the box. Their video showed their product features, but not suggested use or how to use. It does seem to dry my hair okay and I like the vent options.

I don't have very long hair, but its thick and curly. This sweet attachment helps to dry my curls quickly and my curls look fantastic afterwards. I don't know about very long hair, but this gave me non bushy beautiful curls in a decent amount of time.

Saw this diffuser on yt Manes by Mel and decided to try. Best diffuser I’ve ever tried! I am going to buy another to have for travel. Love how you have twist dial for air flow options.

I did not check the dimensions of my dryer before getting this, so I can only rate based on the appearance and not the function.