Finally, each hair dryer's noise emission level is determined via the third-party certifier Quiet Mark, which issues a star rating based on recorded sound level tests. In addition, we rate ease of use, including comfort of hold, ease of putting on and removing attachments, location and ease of controls and buttons, and any potential irritation or damage to scalp, skin or hair. In the Lab, scientists evaluate hair dryers across price points and power ratings (ranging from 1,500 to 2,000 watts) by measuring drying speed on standardized human hair samples, airflow force, weight, air and surface temperature and cord length. These included dozens of airflow and temperature experiments and weight and cord length measurements. In the GH Beauty Lab's most recent test, our scientists evaluated 41 hair dryers over eight weeks (for a total of 320 hands-on testing hours), recording 2,244 data points to determine the winning models. The Good Housekeeping Institute Beauty Lab has been testing hair tools, including hair dryers - plus hair dryer brushes and travel hair dryers - for over a decade. Thousands of data points were then tallied to compile this list of the best hair dryers you can buy. In the most recent test of hair dryers, GH Beauty Lab analysts evaluated 41 products in the Lab and at home for ease of use, performance, drying time and more. GH Beauty Lab experts rigorously test hair dryers in our Lab on human hair samples and consumer testers to assess how well they work and whether they cause hair damage. We've got the full blow-by-blow on the best hair dryers you can buy from Good Housekeeping Institute Beauty Lab scientists and professional hairstylists. But it's tricky to know where to start, with so many models on the market and seemingly endless factors to consider, from your hair type and concerns to each blow dryer's technology and your desired features. For the best results, "you need the maximum amount of power with the best type of airflow to protect the hair, combined with the lightest weight possible," explains Michelle Cleveland, celebrity hairstylist and owner of Hair Addict Salon in Toms River, New Jersey. One of the keys to getting stunning, professional-level blowouts at home is a top-quality hair dryer. Our top picks, based on testing notes from the Good Housekeeping Institute, remain the same. We updated this article in January 2023 to ensure the information reflected current prices, features and more.
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