Bio Ionic OnePass Styling Iron 1”

One tool. Endless styling possibilities.

The Bio Ionic OnePass Styling Iron 1” is a professional flat iron designed to create smooth, shiny, polished hair with fewer passes. Its versatile 1-inch plates offer the perfect balance of coverage and precision, making it ideal for straightening, smoothing, creating waves and forming soft curls.

Powered by NanoIonic™ MX technology, the mineral-infused plates help maintain moisture while styling, leaving hair looking softer, smoother and beautifully conditioned. Bio Ionic’s signature Silicone Speed Strips gently grip and guide the hair through the plates for consistent tension and a smooth glide without unnecessary pulling or snagging.

From sleek, straight styles to effortless bends and waves, the OnePass delivers professional-level control in one exceptionally versatile styling tool.

Why You’ll Love It

• Versatile 1” plates for straightening, smoothing, waves and curls
• NanoIonic™ MX technology helps maintain moisture while styling
• Silicone Speed Strips help guide hair smoothly through the plates
• Helps smooth the appearance of frizz and flyaways
• Leaves hair looking soft, polished and brilliantly shiny
• Digital temperature control up to 450°F / 230°C
• Fast, consistent heat for efficient styling
• Temperature memory remembers your previous heat setting
• Rounded design makes creating waves, bends and curls easier
• Suitable for a wide variety of hair lengths and textures
• Professional 9 ft cord
• Universal voltage for convenient travel
• Automatic shut-off

The OnePass Difference

The Bio Ionic OnePass is designed to achieve a beautifully smooth finish without repeatedly passing over the same section of hair.

Its combination of consistent professional heat, mineral-infused technology and signature Silicone Speed Strips helps maintain even tension as the iron moves from root to tip. Hair emerges looking sleek, smooth and polished with beautiful shine.

The 1” plate size makes this version exceptionally versatile. It provides enough surface area for efficient straightening while remaining narrow enough for precision styling around the roots, hairline and shorter sections.

Best For

All-Around Styling — An excellent choice if you want one iron for straightening, waves and curls.

Short to Long Hair — The 1” plate provides greater precision while still efficiently styling longer hair.

Fine to Coarse Hair — Adjustable temperature allows you to tailor the heat to your hair type.

Frizz-Prone Hair — Helps create a smoother, more polished finish with beautiful shine.

Waves & Curls — The narrower plates and rounded body make it easier to create bends, waves and soft flat-iron curls.

Precision Styling — Easily work closer to the roots, around the hairline and through smaller sections.

How to Use

Begin with completely dry, detangled hair and apply your preferred heat protectant.

Divide hair into manageable sections and select the appropriate temperature for your hair type. Allow the iron to reach the selected heat.

For straight styles, place a section of hair between the plates near the roots and glide the iron smoothly toward the ends.

For waves or curls, gently rotate the iron as you glide it through the hair. The amount of rotation and speed of your movement will determine the shape and definition of the finished style.

For finer, colour-treated or more fragile hair, begin with a lower temperature and increase only as needed.

Key Specifications

Brand: Bio Ionic
Product: OnePass Styling Iron
Tool Type: Professional Flat Iron / Hair Straightener
Plate Width: 1”
Technology: NanoIonic™ MX
Maximum Temperature: 450°F / 230°C
Temperature Control: Digital Adjustable Heat
Temperature Memory: Yes
Silicone Speed Strips: Yes
Universal Voltage: Yes
Cord Length: 9 ft
Colour: Black

Frequently Asked Questions

Is the Bio Ionic OnePass 1” good for all hair types?

The adjustable temperature and versatile 1” plate size make the OnePass suitable for a wide range of hair types and textures. Use a lower temperature for finer or more fragile hair and increase the heat only when necessary for thicker or more resistant textures.

What is the difference between the Bio Ionic OnePass 1” and 1.5”?

The 1” OnePass provides greater precision and versatility, making it better suited to curls, waves, shorter hair and styling closer to the roots.

The 1.5” OnePass covers more hair with each pass, making it particularly useful for quickly straightening long, thick or coarse hair.

Can you curl hair with the Bio Ionic OnePass 1”?

Yes. The 1” version is particularly versatile for creating curls, waves and bends. Its narrower plates provide greater control than the wider 1.5” version when forming curved styles.

How hot does the Bio Ionic OnePass get?

The OnePass offers adjustable professional heat up to 450°F / 230°C, allowing you to choose a temperature appropriate for your hair type.

Is the Bio Ionic OnePass 1” good for short hair?

Yes. The 1” plates offer greater precision than wider irons, making them well suited to shorter hairstyles, face-framing pieces and styling closer to the roots.

Is the Bio Ionic OnePass dual voltage?

The OnePass supports universal voltage, making it suitable for international travel when used with the appropriate plug adapter.