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Bio Ionic

OnePass Flat Iron 1.5"


Best flat iron for healthy, shiny hair

The new and improved Bio Ionic® OnePass® Styling Iron 1.5" uses patented silicone strips and Bio Ionic Moisturizing Heat™ Technology to deliver smooth, shiny, healthy-looking styles—in just one stroke. 


    NanoIonic™ MX

    A proprietary complex of natural minerals that infuses moisture back into hair while you style. This ensures strands stay smooth, hydrated, and frizz-free.

    Gentle grip

    A silicone speed strips deliver one-pass styling from root to tip by gently gripping the hair, rather than clamping hair in between the plates. Smoothing and straightening without pulling, snagging, or breaking strands.

    Professional quality
    • Digital temperature control up to 450 degrees F / 230 degrees C
    • Rapid heat up time and consistent heat delivery
    • Ergonomic design and 9'ft swivel cord
    • Universal voltage
    • 1-hour auto shut off
    • Temperature memory resets to last set temperature when re-powered
    • 1 year warranty through Hair Holistic and 4 years warranty after that through Bio Ionic

    Best used with a heat protection product such as Hair Love Prep Spray or Serenity Smoothing Cream.

    Apply Hair Love Prep Spray or Serenity Smoothing Cream to the hair, then use light pressure as you glide through the hair. This will smooth the cuticle without stretching your hair and lock in the style.

    Best for straight styling with increased shine, one pass styling on all hair types.

    Colour Safe

    Pairs well with:

    Earn points on every product

    Carbon offset shipping

    Free shipping on orders over $100

    OnePass Flat Iron 1.5"

    About the Brand

    Bio Ionic is a long standing professional and trusted hair tool creator. First, they introduced ions to beauty, and now they’ve created a whole new way to experience heat: Bio Ionic Moisturizing Heat™ Technology locks in your hair’s moisture and conditions strands while you style. Using negative ions produced by their proprietary natural mineral complex and delivered by our cutting-edge heat conducting elements. Bio Ionic styling tools have revolutionized heat styling and allow you to create beautiful, long-lasting styles without compromising the health of your hair.

    Frequently asked questions
    How do you choose your products?

    All our products are researched, tested and curated by our Founder, Diana Osborne. Diana has been a licensed hairstylist since 2009, with a specialty in clean beauty and ingredients over the last decade. You can read more about Our Standards, and banned ingredients.

    How fast will it ship?

    Once your order is placed we usually ship it out in 1-3 business days! The speed of shipping can be chosen at checkout.

    What is your return policy?

    To avoid waste, we carry many products in smaller sizes so you can try them out, as well as the option to receive professional recommendations and avoid the hassle of returns. If you have purchased a product that really doesn't work for you, please contact us.

    Unopened and unused items may be returned within 21 days for store credit only, subject to approval. Customers will be responsible for the cost to ship returns back.

    Please inspect your order upon receipt and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

    Unfortunately, we cannot accept returns on sale items or gift cards.


    Switching to Clean Haircare?

    If you're making the switch to clean haircare, we have a great post on What to Expect When Switching to Clean Haircare, this video from Diana on best practices, as well as our Videos resource on Shampoo + Conditioners.

    If you're not sure which product is right for you

    Talk to one of our professional hairstylists by email or chat

    Please make sure you have everything, including using any discount codes, as orders cannot be changed once placed. Thank you!


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