This is an absolute MUST HAVE for anyone with natural black hair. We talked earlier about how dangerous low-end flat irons can be for anyone with type 3 or type 4 hair, and this is precisely why. If you fit into those hair types, any straightener without an adjustable temperature control is likely to be way too hot for your hair to handle – especially for long-term use.
Ceramic and electrical straighteners were introduced later, allowing adjustment of heat settings and straightener size. A ceramic hair straightener brush was patented in 2013. Sharon Rabi released the first straightening brush in 2015 under the DAFNI brand name. The ceramic straightening brush has a larger surface area than a traditional flat iron.
We usually roll our eyes at oil-infused heat tools — but you can actually watch this oil being sucked right out of the refillable cartridge in the handle. When you press the iron closed over your strands, the oil vapor seeps through tiny holes to condition and straighten your hair. And don't worry fine-haired friends: It made our tester's hair silkier, but not like she'd dipped it in an oil vat.