GHD claims that its Duet Blowdry checks the surface temperature of the device 400 times per second to maintain consistent heat during use. This is a higher frequency compared to the 250 times per second featured in GHD’s similarly equipped Chronos Max hair straightener. Like the Chronos, which operates at a single heat setting of 365 degrees Fahrenheit, the Blowdry reaches only one heat level, 248 degrees Fahrenheit. GHD promotes this as an optimal low styling temperature. Although 248 degrees is lower than many other heat tools, such as straighteners or curling irons, it is relatively high for blow-dry brushes, which typically offer heat settings around 200 degrees, though some products like the Revlon can reach up to 240 degrees.
The Duet Blowdry is designed to minimize heat damage. The extent of heat damage will depend on the hair’s delicacy and whether a heat protectant is used, as GHD suggests, considering the device applies heat even to wet hair, which is particularly sensitive. While GHD markets the Duet Blowdry as a wet-to-dry brush, the company advises that shaping the hair is only feasible once it is 80% dry. Users can employ the device to bring hair to this level before styling. For those with longer hair, additional drying assistance from the Duet Blowdry may be necessary.
In terms of styling performance, the Duet Blowdry reportedly delivers impressive results, producing significant volume without overwhelming airflow. The device also appears to reduce the occurrence of flyaways and extend the longevity of a blowout, which can look better on the second or third day with reduced frizz and maintained volume.
The decision to invest in the Duet Blowdry may be influenced by the frequency of use. Users who regularly use similar devices might find it worthwhile, despite it being twice the price of alternatives like the Drybar or T3 blow-dry brush. The smoother results and reduced frizz reported justify the expense for some users.
However, the Duet Blowdry offers only a single tool for its price, unlike other devices like the Shark FlexStyle or FlexFusion, which come with multiple attachments at a similar cost. Some users, such as the article’s editor, find they need to follow up with a traditional flat iron after using their FlexFusion. In contrast, the Duet Blowdry reportedly provides sufficient results without requiring additional tools.
