Like growing out bangs, creating a breakthrough beauty product doesn't happen overnight! 👏💄 AllureBestofBeauty
Finally, they added a glass cover — between the halogen bulb and the dryer's nozzle — with a multilayer coating that filters out UV rays and unnecessary visible light. "The light source itself emits a broadband continuous spectrum. Only infrared light can pass through the filter, while most visible light and all of the UV light are filtered out," Wang explains.
The infrared light generates heat that is then transferred to the hair, says George. "It's still evaporating water in the hair, but using a different heat source." Hair doesn't get nearly as hot. "Measuring hair temperatures, by filming the blow-drying process with an infrared camera, we can see that hair strands dried bystay below around 111 degrees," says Wang. "Drying with traditional dryers can heat hair up to around 140 to 158 degrees.
Zuvi weighs in at under a pound and uses just 680 watts, compared with traditional dryers, which run about 1,800 watts. If you use your dryer for 20 minutes a day, that's the weekly equivalent of driving 4.5 miles, charging 221 smartphones, or burning 2 pounds of coal — actual examples provided by the Environmental Protection Agency. But the Zuvi still dries hair just as fast as other dryers in its price range.
And Zuvi knows how to read the room, literally. "We found a small change in the ratio of light vs. wind could largely affect the drying speed, comfort, and hair health." So the team had a robotic arm blow-dry hair in different controlled environments to create an algorithm for adjusting light and wind based on room temperatures, which are measured in real time with the dryer's built-in sensors.
Results were just as impressive outside the lab: "My curly hair retains a ton of water after a shower, so it usually takes ages — up to an hour — to fully blow-dry," says our commerce producer Sarah Hoffmann. "I was blown away that I was able to completely dry my hair in under 20 minutes with the Zuvi. My scalp never got too hot, so I didn't feel I needed to take a break to cool down, like I often do.
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