Once it's on, you're good to go!
Was a little challenging getting it on my dryer but after searching the reviews, I saw what I needed to do. A customer suggested putting the diffuser on a flat surface and pushing the dryer into it. That helped so much! I've used it a few times now and I've loved it.  Don't push it so hard against your hair/head to keep it from collapsing on you. Gentle is better for your curls anyway so yay!
Rating: 5 stars