Bio Ionic Curling Iron Review: One of The Best Long Barrel Curling Iron

by | Mar 3, 2025 | Hair Care

Bio Ionic Long Barrel curling iron

Honestly, I’ve always loved a good curling iron and one that isn’t totally clunky to use but doesn’t feel like a chore to do on my hair. It’s probably why I have become so attached to a brand called Bio Ionic. This is my 3rd curler from them and I already handed that 1 inch & 1.25 inch one that I had. However, when I got my hands on the 1.5” with its extra long barrel and saw my massive thick, super long hair go down my back 30 inches I knew I had to have it. This Bio Ionic Curling Iron review is based on that transformative experience. You can also check the review of Dyson Airwrap vs Supersonic to see which one could unlock your best hair achievements.

Bio Ionic Curling Iron Review: Personal Experience

When I plugged this long barrel curling iron (the Bio Ionic 1.5”) in, I was pretty excited to find that it heats up like unbelievable and evenly. Finally no more waiting around for my iron to get up to temperature. I could curl within minutes and that made such a difference! And even if I have to spend that time—and time is something my hair doesn’t often cooperate on styling—this curler cut it down to about 10 minutes for my entire head of hair.

The quality of the curls, and the health of my hair post styling, are what stand out most. I’ve usually ended up with hair that feels straw-like and crispy and frizzy with the cheaper brands and that is somewhat frustrating as I have put in such effort. Bio Ionic has upended that narrative, however. By putting it in nice curls they hold the curls beautifully and my hair comes out of the session looking super smooth and shiny and with a glow all of its own. It’s the iron seals in the moisture osmosis, which make each strand hydrated, without getting dry and falling out.

I am no stranger to damage induced using curling irons, this curling iron has become a staple for my beauty routine and it is beyond just a tool… Here it is more about iron’s confidence mode but it’s also about how it makes me feel — confident, beautiful, and in control of my look. If you’re looking for another curling iron that creates perfect curls with ease, this review on the T3 Curling Iron is a must-read!

Bio-Ionic-Long-Barrel-curling-iron.
  • Barrel Sizes Available: 0.75-inch, 1-inch, 1.25-inch, 1.5-inch
  • NanoIonic MX Technology
  • User-Friendly
  • Auto shut-off
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Bio Ionic Long Barrel Curling Iron – Key Features

  • Cool-Touch Finger Grip: Ensures safety and continues styling.
  • NanoIonic MX Technology: Break down the water molecules for deeper hydration conditions hair.
  • Thumb Grip Clamp Control: It is easy to handle and has precise styling.
  • 9 Ft Swivel Cord: It offers the freedom of movement without a tangle.
  • 1-Hour Automatic Shut-Off: It turns off for safety after an hour when it doesn’t receive any social activity.
  • Digital Temperature Control: For tailored styling adjustable up to 450° F (232° C).
  • Tailored for Every Curl Type: 0.75″ Barrel: Nice for curtailing and making little tiny curls.1″ Barrel: Medium, defined curls.1.25″ Barrel: Suited for large, soft curls.1.5″ Barrel: Good for voluminous free-flowing waves and curls.

Bio Ionic Curling Iron Review: Benefits

  • The Healthiest Way to Style Your Hair: Designed to lock in moisture, seal the cuticle, and give curls a long-lasting, hydrated, bouncy appearance that’s not dull or limp, this combines NanoIonic MX & Moisturizing Heat Technology.
  • Advanced Hair Curling Iron: NanoIonic MX technology hydrates and conditioner hair for a silky and smooth finish, even consistently.’
  • Versatile & Quick Styling: Since most straighteners have a 1.5” barrel, the extra 2” length of the extra barrel is ideal for curling, especially voluminous, lived-in curls that most people simply cannot achieve with a regular barrel (read benefits for long hair too or styling back parts).
  • Fabulous Features: With variable heat settings up to 430°F for various hair types, you can always get the heat just right for your hair. The feature of a cool touch grip and auto shut-off ensures safety.
  • Because My Stylist Said So: Revolving heat styling, this award-winning tool is trusted by professionals and is designed to give visibly smoother, softer, and shinier hair, without compromising hair health regardless of use.

Comparison of 4 Bio Ionic curling irons

Here’s a comparison table for the specified Bio Ionic curling irons:

FeatureBio Ionic Long BarrelGraphene Long BarrelGoldPro Curling IronStylewinder
Barrel MaterialCeramic NanoIonic MXGraphene24K Gold-Coated CeramicCeramic NanoIonic MX
Barrel Size0.75″,1”, 1.25”, 1.5”1.25”1”, 1.25”0.75″,1”, 1.25”, 1.5”
Barrel Length2″ longer than average2″ longer than average15% longer than originalStandard
Temperature Range250-430°FUp to 385°FUp to 430°FUp to 430°F
Heat-Up Time22 to 39 seconds30 seconds30 seconds60 seconds
Special TechnologyMoisturizing HeatMoisturizing HeatMoisturizing HeatRotating Clamp
Additional FeaturesDigital ControlDigital ControlAdjustable HeatAuto Rotation
Safety1-hour Auto Shut-Off30-min Auto Shut-Off1-hour Auto Shut-Off1-hour Auto Shut-Off
Cord Length9 ft Swivel9 ft Swivel9 ft Swivel9 ft Swivel
Best ForLong, thick hairAll hair types, hydratingMedium to short hairEasy, quick styling

Notes:

Bio Ionic Long Barrel: It’s got its moisture-locking technology and is versatile across all hair lengths.

Graphene Long Barrel: High conductivity of Graphene is used to quickly, and evenly curl with minimal damage.

GoldPro Curling Iron: Uses gold coating for even heat distribution, good for medium or short hair.

Stylewinder: Rotating clamp, user-friendly for making a variety of styles with less work, unique.

Pros and Cons

Pros

  • Versatile Sizing: Several sizes of barrel are available to fit different types of curl, 0.75″, 1″, 1.25″, 1.5″.
  • Fast Heat-Up: This comes in at around 39 seconds which is perfect for those rushed mornings.
  • Moisturizing Heat Technology: It’ll leave hair smooth, shiny, and hydrated, allowing for less damage.
  • Long Barrel: Perfect for the tail portion of a hairstyle, in particular, because you can get all the hair in one, fast and efficient pass.

Cons

  • Learning Curve: For first-time users, control buttons tend to be confusing.
  • Premium price

Ideal For

  • A time-saving styling tool for people with long hair.
  • Those interested in keeping hair healthy while they are styling.
  • Those who wish to obtain different curl types with one tool.
  • People with thick hair looking for even heat distribution.

How I Use

So after spraying a heat protectant, I start with slightly damp hair. I started sectioning my hair at the back. With the 1.5″/ barrel, wrap large sections over the iron for loose voluminous waves, and smaller sections for tight curls with the smaller barrel. Being able to adjust the temperature so it’s meant to match my hair so curls last, with no heat damage.

Why is bio ionic curling iron better?

The longer barrel of the Bio Ionic curling iron makes it better for finishing hair with versatility. NanoIonic MX Technology hydrates hair while sealing to the cuticle for smoother, shinier results. Moisturizing Heat technology conditions hair as it is styled. It also provides several alternative heat setting options for different types of hair that should help to lessen damage.

Are ion curling irons good?

Negative ions are the forte of ion curling irons because they reduce frizz, add shine, and lock in moisture; they are good for coarse or frizzy hair. While they are praised for creating long-lasting curls with (less) heat damage, again, this depends on hair type and usage.

What is an ionic curling iron?

An ionic curling iron uses ionic technology which creates negative ions while you style, which will help reduce static and frizz, and seal the hair cuticle to lock in moisture, leaving you with smoother and healthier-looking hair overall.

How does bio-ionic work?

Bio Ionic technology sends out negative ions, breaking down the water molecule into smaller particles allowing for deeper moisture penetration into the hair, resulting in smoother. Moisturizing Heat Technology means it will keep you hydrated during styling, and heat distribution to materials like Ceramic NanoIonic MX minimizes heat damage from hot spots.

Is it OK to use curling iron everyday?

Not everyone should use a curling iron every day. It can be pretty hard, especially for fine or damaged hair. If you have thick, healthy hair and use lower heat settings with a quality heat protectant, then you probably don’t have to use it daily. But frequent use, particularly at high temperatures, can dry out, break, and lose elasticity. To maintain your hair health, it’s important to use heat protectants, change your styling methods, and even sometimes take a break for hair from heat styling.

My Verdict

The Bio Ionic Long Barrel Curling Iron for sure has made my hair styling routine so much better! It’s not about the curls, it’s about the hydration, how my hair feels after styling all about that. The learning curve on the controls is long, but once you get it, it’s a game changer for long, thick hair. I wouldn’t have invested if I didn’t have results and it gave my hair some health benefits. If you’re exploring other tools for your hair, you might also find this Ultimate Guide to the Best Babyliss Pro Straightener helpful!

Conclusion

The Bio Ionic Long Barrel Curling Iron is really performing as I’m genuinely pleased with it. For everyday quick looks and special occasions, it’s officially my go-to. In this Bio Ionic Curling Iron review, if you’re looking for a curling iron that’s not simply about styling but offering hair care as well, I’d recommend this. But be careful with the learning curve related to the control. Being more on the expensive side, I think the tech and performance make it worth the money if you style your hair often.

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