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Bio Ionic OnePass Styling Flat Iron - Moisturizing Heat Hair Straightener with Silicone Speed Strips, Digital Temperature Control to 450°F, Auto Shut-Off, Shine-Boosting Plates

  • Based on 277 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Jul 7
Order within 19 hours and 12 minutes
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Size: 1 inch


Features

  • Moisture-Locking Performance: Bio Ionic Moisturizing Heat Technology is designed to help lock in hairs moisture while you style, so each pass leaves strands looking smoother, glossier, and more polished instead of dry or dull. It supports healthy-looking, long-lasting results that make sleek finishes feel softer to the touch and beautifully refined for everyday wear, special occasions, and everything in between
  • Faster One-Pass Straightening: Silicone speed strips are made to gently grip the hair and guide it evenly from root to tip, helping speed up the straightening process with fewer repeated passes. Instead of feeling harsh or overly aggressive, the styling experience is smoother and more controlled, creating a sleek, uniform finish with shine, softness, and a cleaner overall look that feels elevated from the first section to the last
  • Custom Heat Control Up to 450F: Digital temperature control allows you to tailor the heat setting to your styling needs, whether you prefer a lower setting for quick touch-ups or higher heat for sections that need extra smoothing power. With heat reaching up to 450F, this flat iron gives you flexibility and precision, helping you create polished straight styles with more consistency, more confidence, and a finish that looks intentional and salon inspired.
  • Peace-of-Mind Convenience: A built-in 1-hour auto shut-off brings reassurance to rushed mornings, midday refreshes, and evenings when routines move quickly. It adds a thoughtful layer of practicality to a beauty tool that already balances sleek design with strong performance. The result is a styling essential that feels as dependable as it is refined, giving your routine a little more ease without taking away from the luxurious, high-performance experience
  • Generous 1-Inch Design: The 1-inch styling surface offers aworking area that can help streamline smoothing on larger sections, making it a smart choice for anyone who wants a sleek finish with less back-and-forth. Finished in classic black with a modern silhouette, this flat iron looks elegant on the vanity and performs like a polished staple made for shine, smoothness, and beautifully put-together hair that feels ready for the day ahead
  • NanoIonic Mineral Technology: This BIO IONIC 1-inch ceramic flat iron helps hydrate dry, damaged hair while styling and is designed to smooth fly-aways, control frizz, and create brilliance and shine.

Product Dimensions ‏ : ‎ 13.5 x 5.75 x 5.75 inches; 1.72 Pounds


Item model number ‏ : ‎ Z-FGTST-OP-1.0LM-AZ


UPC ‏ :


Manufacturer ‏ : ‎ Beauty By Imagination (Bio Ionic)


Best Sellers Rank: #37,865 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #152 in Hair Straightening Irons


#152 in Hair Straightening Irons:


Customer Reviews: 4.4 4.4 out of 5 stars (277)


Product Benefits: NanoIonic mineral hydrates dry, damaged hair. Smoothes fly-aways and controls frizz. Creates brilliance and shine.


Brand Name: BIO IONIC


Model Name: OnePass Straightening Iron 1"


Resulting Hair Type: Straight


Manufacturer: Beauty By Imagination (Bio Ionic)


UPC: 736658460872


Manufacturer Warranty Description: 5 Year Manufacturer Warranty


Hair Type: All


Model Number: Z-FGTST-OP-1.0LM-AZ


Manufacturer Part Number: Z-FGTST-OP-1.0LM-AZ


Unit Count: 1 Count


Size: 1 inch


Item Dimensions L x W: 13.5"L x 5.75"W


Power Source: Corded Electric


Max Temperature Setting: 450 Degrees Fahrenheit


Input Voltage: 120 Volts


Item Shape: Flat


Color: Black


Material Type: Ceramic


Heater Surface Material: Ceramic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jul 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Perfect product!
Size: 1.5 Inch
I love this thing. I use it everyday. Straightens my hair quickly and stays straight after use. Heats up really fast. The plates are wide and you can cover a lot of surface to get finished quickly. Easy to use and leaves my hair shiny. Light weight for travel as well.
Reviewed in the United States on May 10, 2026 by Melody

  • Worth the money
Size: 1.5 Inch
This unit is amazing! It heats up extremely fast, and is very easy on the hair. My hairdresser used it, and recommended it for me. A little pricey, but surely worth it
Reviewed in the United States on May 26, 2026 by Evonne Grooten

  • Great quality!
Size: 1.5 Inch
So smooth on my hair! The best hair straightener I’ve ever owned! I have curly hair and it works great for me!
Reviewed in the United States on January 18, 2026 by Tori Collins

  • Sin cruelda
Size: 1.5 Inch
Deja un planchado bello y es cuidadosa con tu cabello
Reviewed in the United States on May 27, 2026 by Greysi

  • Good
Size: 1.5 Inch
Good
Reviewed in the United States on April 17, 2026 by José Luis Medina

  • I DO NOT RECOMMEND
Size: 1.5 Inch
I had previously had purchased twice throughout the years the one pass without the strip and it would leave my hair shiny and beautiful. This iron has literally destroyed my hair. If I use the tip of it without touching the strip in the middle I'm fine but if my hair touches the strip it breaks it or makes it frizzy and coarse, especially around my temples. I'm scared to use it with the Retex/Agave treatment. I will look for the one pass without the strip. ... show more
Reviewed in the United States on March 8, 2026 by RestoreHopeUSA

  • As Described.
Size: 1.5 Inch
Everything good.
Reviewed in the United States on March 26, 2026 by BNC

  • For shiny smooth hair
Size: 1.5 Inch
It’s fantastic and works as advertised
Reviewed in the United States on January 23, 2026 by De Dee

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