14 Best Diffusers for Curly Hair in 2024
A must-have styling tool for curls and waves.

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Those with curly hair types are likely well aware of the damage a hair dryer can do to your strands (think uneven ringlets, frizz and heat damage, to name a few). Typical hair dryer nozzles could be the culprit; though they work for those with naturally straighter hair, curls and waves need a different approach. Enter: diffusers.
If you aren't familiar with a diffuser, it is a "dryer attachment that either is included as part of a hair dryer set or can be purchased separately to help dry hair while enhancing its natural texture," explains Good Housekeeping Institute Beauty, Health & Sustainability Lab Executive Director Birnur Aral, Ph.D. "They separate the air flow coming from the hair dryer into smaller streams through the many holes in their construction." By slowing down the air flow, a diffuser provides a more gentle drying experience that's essential for more fragile curls and waves.
Our top picks:
The Good Houskeeping Institute Beauty Lab has tested all kinds of hair tools, from hair dryer brushes to travel hair dryers. To put together this list of the best diffusers for naturally curly and wavy hair, our scientists relied on data from our past hair dryer tests (many dryers include a diffuser), and we rounded out our knowledge by interviewing two top hairstylists. Below, you can read the full reviews of our top picks, including universal models that work on any hair dryer, drugstore buys and travel-friendly picks.
To learn more about our methodology for choosing the best diffusers, based on our Lab's research — plus everything you need to know about what is a diffuser and how to use one — head to the end of this guide. Looking for more information on how to take care of your curls? Check out our guides to the best curly hair tips and tricks and how to plop curly hair.
Birnur (she/her) led the Beauty, Health and Sustainability Lab at the Good Housekeeping Institute from 2007 to 2023. In addition to overseeing product testing and GH Seal applications, she conducted our annual Beauty Awards selection process and was an active leader in GH’s green initiatives, including the Sustainable Innovation Awards and Raise the Green Bar Summit. In addition to earning M.Eng. and Ph.D. degrees in chemical engineering, she also has a professional certificate in sustainability management from Columbia University.


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