With a whopping 31,500 customer reviews, the HSI Professional Glider is, without a doubt, a popular choice of ceramic flat iron. Aside from the very reasonable price point, customers love how quickly the hair straightener smooths even the most unruly texture and leaves tresses looking professionally styled. The heat options range from 140- to 450-degrees Fahrenheit, giving you a wide range of options to discover the ideal heat for you hair, and the dual-voltage means you don’t have to leave your new hair-straightening staple at home when you travel. An added touch? The flat iron comes with a mini argan oil leave-in hair treatment to boost your hair’s shine and softness.
Of course since these are undertones, they are much harder to detect than the general color of your skin. You (usually) can’t simply look at yourself and just know that you have a medium skin tone with red undertones or a deep skin tone with yellow undertones. So how do you figure out what your undertones are? There are some sneaky clues hidden on your body and in your fashion choices to help out. Here are five of them.
Sephora’s best-selling hair straightener and flat iron list is dominated by styling tools from big hitter GHD. The crème de la crème on the beauty retailer’s list is GHD’s Platinum+ Professional Performance 1” Styler. The flat iron operates at 365-degrees Fahrenheit, which the brand considers “the optimum styling temperature for even healthier hair,” has a 20-second heat-up time, and a heat-resistant plate guard to protect your furniture and other surfaces. While the price point is definitely on the higher side, GHD’s hair straightener uses predictive technology that adapts to your hair’s individual texture and needs, promising you a unique — and worth it — hair-styling experience.

What’s the best hair straightener? Should I use ceramic or titanium plates? What’s the best flat iron for curly hair? And WTF’s the deal with straightening brushes?! Yup, there are approximately a billion questions that come with buying the best flat iron, and it doesn’t help that there are also a billion options to choose from, all ranging from somewhat gentle to fry-your-hair intense.
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