As one of the hottest hair straighteners we have reviewed (temperature-wise…although it is pretty to look at, we have to admit…), the Solano Sleek Heat 450 Professional Flat Iron can reach temperatures of up to 450° F in as little as 60 seconds! This Solano hair straightener also features thin 1 inch plates, making it an ideal choice for anyone with short or medium length hair and the quick heat time ensures that even the most stubborn of curls can be tackled with a little extra heat. If you are looking or something a little larger though, it is also available with 1.54-inch plates too.


It is important to consider what options are important to you when selecting a hair straightener. You must select a hair iron with a heat setting that fits your needs. If you have fine hair, a lower heat setting may be sufficient. However, thick coarse hair may require a higher heat setting to achieve your desired look. Plate size should also be considered. A flat iron with small plates might be best for shorter hair, while a flat iron with larger plates might be best for longer hair. Some hair straighteners have features such as temperature readouts and rollers that might be important to your needs.
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.”
It is packed with the most advanced technology to give you shinier, smoother results that lasts longer. The one-inch wide heating plates are made of high quality, durable ceramic that provides an ultra smooth surface so that you’re hair glides through. The ceramic plates are then coated with tourmaline gemstones that emit negative ions to give you a frizz-free shine.
Once you have purchased your new hair straightener and mastered the multitude of ways you can put it to good use, the only thing left to do is take care of it, so it lasts for years to come! Just like any luxury beauty tool, you will want to care for your hair straightener to extend its longevity and prevent corrosion (which can actually leak into your flowing locks…yuck!). Our top tips for caring for and cleaning your new hair straightener include:
HSI Professional is committed to delivering salon-quality styling tools and hair care products to consumers all over the world. All appliances are designed to hold up to salon and home use, while all hair care products are made in the USA using pure Argan Oil containing vitamins A, B, C and D. These hair products are specially created to replenish, reinvigorate, repair, and add shine and smoothness to you hair. Using high-quality ingredients and construction in the expanding product line, this brand is built for you and will continue to adapt around your feedback.
Our two testers with kinky and thick hair loved the Chi Air Expert Classic Tourmaline Ceramic Flat Iron. In fact, it was each of their top picks, with the Bio Ionic coming in second. The Chi Air reaches 410 degrees F, which is definitely hot enough for thicker and curlier hair types. The speed at which the tool worked was surprising considering the kinkiness and thickness of both testers’ hair. One tester with long, curly hair had to leave early for an event and needed to finish styling. The Chi Air moved through her hair quickly, giving her time to spare. And, even at 410 degrees, our testers didn’t feel like their hair was being fried or that the heat burned their heads. In fact, they complimented how soft it made their hair feel and how comfortable it was to use, unlike the NuMe Megastar which snagged a lot or the HSI Professional Glider which felt hot against their scalps. As one tester said, “Chi is killing it.”
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.
×