Details & care
What it is: An attachment that diffuses hair for the ultimate curl definition and is designed to fit all Bio Ionic hair dryers and most other dryers, too.
- 2" opening
- Cruelty-free
- Item #5446633
Shipping & returns
Free shipping. Free returns. All the time. Purchases made online can also be returned or exchanged at any Nordstrom store, free of charge. Read more about our shipping & returns policies.
Gift options
Choose your gift options at checkout. Some items may not be eligible for all gift options.
Delivery
- Email gift message (free)
- Printed gift message (free)
- Fabric gift bag ($5)
Need help finding the perfect gift? We've got you covered.
Most helpful positive review
Nov 11, 2025
Awesome diffuser
An amazing diffuser. I love that you can adjust the airflow. I’ve used diffusers my whole life and this is the best one ever.
Lori S.
Reposted from Bio Ionic
Most helpful critical review
Nov 6, 2017
Incentivized review
Does not fit most dryers
Wish I could've given this a try. It didn't fit on my hair dryer (unlike what the description claims), I own a Hot Tools Tempest 2000 dryer. It doesn't give a measurement either so you are not able to measure before purchasing. It was too big to attach, my dryer nozzle diameter is 1-3/4". So my review is solely based on fit. Not able to give a review on the use of the tool.
tootallfortheshoe
3found this helpful
5 stars
73%
4 stars
2%
3 stars
4%
2 stars
4%
1 star
16%
Pros:
Cons:
Current reviews don’t mention any.Sort by Most Helpful
tootallfortheshoe
Nov 6, 2017
Incentivized review
Does not fit most dryers
Wish I could've given this a try. It didn't fit on my hair dryer (unlike what the description claims), I own a Hot Tools Tempest 2000 dryer. It doesn't give a measurement either so you are not able to measure before purchasing. It was too big to attach, my dryer nozzle diameter is 1-3/4". So my review is solely based on fit. Not able to give a review on the use of the tool.
3found this helpful
Sassymu
Aug 7, 2020
Incentivized review
not a universal diffuser
This is not a universal diffuser. It does not fit my T3 blow dryer. Will definitely be returning
2found this helpful
Metalgutschmidt
May 6, 2019
NOT UNIVERSAL...
This is NOT universal! It doesn't fit either one of my blow dryers.
Going straight back.
2found this helpful
Laurie J.
Reposted from Bio Ionic
Nov 28, 2025
Did not fit my Bio Ionic Graphene mx dryer
As diffusers go, it looks like it would do a good job. But it did not fit my Bio Ionic dryer so it was returned. Disappointed that they don't clarify it on their website so I paid for shipping both ways. Not impressed.
Lori S.
Reposted from Bio Ionic
Nov 11, 2025
Awesome diffuser
An amazing diffuser. I love that you can adjust the airflow. I’ve used diffusers my whole life and this is the best one ever.
Nicole W.
Reposted from Bio Ionic
Sept 2, 2025
Diffuser
Works so well. Probably the best one so far with the adjustable air flow. I'm a hair stylist and I am so happy with the diffuser. Definitely will recommend.
