“I’ve owned a Conair, Chi, and I-Tech straighter before, but this one is FABULOUS! There really is no tugging at all on your hair — so smooth, and I was shocked that it truly heats up in 15 seconds, as advertised! It also does something magical to my hair: It adds more shine like no flat iron has done before. Mind you, my hair is very difficult to deal with. It has always been coarse, wavy, dry, and thick! This iron worked beautifully on my hair.”
“This is a badass flat iron. Here’s the skinny: The moment you turn it on, it has a ‘Fragile, Damaged, Healthy’ setting, and it also auto-locks the buttons to keep what temperature you want while doing your hair. It comes with a professional bag for traveling with it. This flat iron is ‘pinky in the air while drinking your tea’ fancy. It is the Ferrari of flat irons, for a girl on a budget wanting a new flat iron. And for my fellow sistas: It works amazingly on African-American hair.”
Working in sections, curl your hair. Using just the wand (and not the clamp at the bottom of the wand that "holds" the hair as it curls), wrap your section of hair around the barrel. Be sure not to overlap your hair, as this will reduce heat and result in limp sections. Use your fingers to hold the edge of the section of hair close to the barrel without burning your hair. Doing this rather than using the clamp will prevent crimps in the curls.
At $230, the Bio Ionic is pricier than any of our top picks. But you get what you pay for. You can truly do with your hair whatever you desire — straight or curled — in one pass. And, if you’re worried about it breaking a few years after purchase, the Bio Ionic comes with a five-year warranty. By investing in a better-quality tool up front, you won’t have to replace your flat iron every couple of years. Plus, the Bio Ionic goes on sale every now and then, so it’s worth keeping your eye out for deals.
The question is, does it live up to all the hype? There are more than 30,000 reviews on Amazon, 70% of these reviews give a 5-star rating, and 14% give a 4-star rating. According to the numbers, the HSI Professional truly is a high-quality product that is well-deserving of the attention it's been given. Buyers love how quickly the HSI Professional heats up, what it does for their hair, and how easy it is to use— even on short hair.
We don’t know too many people that are using their hair straighteners vertically, but there must be a few since ISA has made a point of clarifying that this model is intended only to be used horizontally, i.e., perpendicular to your hair. According to the manufacturer, using the hair straightener horizontally reduces hair pulling for a more comfortable experience. This may be particularly important to you if your hair tends to knot easily or you have unruly curls and texture.
For such a high-end flat iron, we were disappointed that the Babyliss doesn’t have a precise temperature display like the Bio Ionic. Our testers were confused by the settings, which had numbers going up to 50 vs. actual temperatures. The numbers represent a range, but you have to look through the instruction manual to figure out what that is. One tester summed it up perfectly: “I don’t want to read an instruction manual to use a hair straightener.”
The ceramic blue plates aren't just pretty; they push conditioners into the hair, quelling frizz 65 percent more efficiently than a traditional ceramic iron. Even experts were impressed. "[It] leaks heat-protective ingredients onto the hair at the exact point of contact, coating every strand during the straightening process," says cosmetic chemist Ni'Kita Wilson.