So there you have it, our experts here at Respectable Reviews picks for the top hair straightener for natural hair, as well as some of our best tips for straightening natural hair without causing damage. While there are so many different types of hair straighteners out there, you can rest confident in knowing that if you’re picking one of the flat irons that our experts selected, you are treating your hair (and your confidence) to the best flat iron for natural hair out there.
The Bio Ionic worked well on all of our testers’ hair, but it’s best on drier hair with a medium thickness. We spritzed testers’ hair with some keratin smoothing treatment, but the Bio Ionic did a lot of the heavy lifting to make our hair feel softer. The tool gets hot, but not too hot to grip, and it excels at creating the silky volume you want without making your hair pin-straight and flat. One tester put it perfectly: “[The Bio Ionic] is the Rumplestiltskin of hair straighteners. It’s turning straw into gold.”

3-in-1 Steam Hair Straightener STRAIGHTENS, FLIPS, CURLS: The upgraded 2018 design of PureBlackMagic Flat Iron Styler by TRENDY PRO will not only infuse your hair with Argan Oil or Water Steam for long lasting frizz-free silky hair but will also be there for you whether you are in a mood for straight, curly or flip-up hair style. This baby has enough power to turn the frizziest coarsest hair to silky and soft in a single pass - call it Pure Black Magic, IT WORKS!
We started with six flat irons but ultimately dropped two because they didn’t work well on any of our testers’ hair. The inexpensive, but highly rated HSI Professional Glider Ceramic Tourmaline Ionic Flat Iron was bulky and awkward. Testers said it felt like two pieces of plastic passing through their hair. We thought the NuMe Megastar Hair Straightener, a popular and more high-end tool, would be a clear contender for our list. However, testers said it snagged hard against their hair to the point of hurting. It was also difficult to hold closed when styling. Because both of these flat irons received such low ratings among our testers, we didn’t include them in our top picks.
The nano ceramic plates in this straightener deliver far-infrared heat, a gentler alternative in and of itself. As if that weren't enough, there's also a reservoir where you can pour in some of the (included) argan treatment and thermal protectant, creating a conditioning steam that will strengthen and safeguard strands while you straighten. Admittedly an extra step, sure, but one that's well worth it.
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