Bio Ionic Long Barrel Curling Iron
The current consensus best overall from Allure and Byrdie, with long-term owners calling it reliable after years of use. The rare modern tool already showing multi-year staying power.
Consolidated from 5 independent outlets
Where the cited sources landed, as we read them
- 4 positive sources
- 1 mixed source
1 of 14 research runs entered this as a product to avoid rather than a pick.
It is the flagship-priced clamp iron on the board: Allure crowns it Best Overall, but Allure's own list shows the Hot Tools 24K Gold Extended Barrel doing the same core job as a mainstream recommendation. The textbook case of paying flagship money for an experience a mainstream iron delivers for far less.
Flagged 10 September 2026
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Pros & cons
- ā Long-term users describe it as reliable and kept using it for years
- ā Heats fast, grips hair well, and holds curls for hours per community reports
- ā Extended barrel suits long hair
- ā Allure and Byrdie both name it their top pick
- ā Named Best Overall by Allure
- ā Heavier than many rivals
- ā Flagship-priced for a job mainstream irons do for far less
The sources behind this ranking
We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found. 3 outlets wouldn't let us check their links. We quote no words from these sources, so each row shows only where we placed it.
Evidence 4 articles and 1 community source
4 positive sources
My Subscription Addiction Article Read A 
Allure Article Read U r/Ulta Reddit thread Read thread B 
Byrdie Article Read 1 mixed source
Frequently asked questions
It ranks #1 of 17 on our curling irons tier list, in S tier. That placement draws on 5 independent outlets.
None of the 5 sources with a clear view is critical of it. Heavier than many rivals. Flagship-priced for a job mainstream irons do for far less.
Ranked nearby in Curling Irons
S tier #2 Hot Tools Pro Artist Digital Curling Iron
A tier #3 2 of 12 research runs entered this as a product to avoid rather than a pick. BaBylissPro Nano Titanium Spring Curling Iron
B tier #4 2 of 14 research runs entered this as a product to avoid rather than a pick. T3 SinglePass Curl X
B tier #5 2 of 14 research runs entered this as a product to avoid rather than a pick. Hot Tools Pro Artist 24K Gold Extended Barrel Curling Iron
B tier #6 1 of 12 research runs entered this as a product to avoid rather than a pick. Hot Tools 24K Gold Curling Iron
D tier #13 2 of 5 research runs entered this as a product to avoid rather than a pick. Beachwaver PRO Curling Iron
D tier #14 3 of 4 research runs entered this as a product to avoid rather than a pick. L'ANGE HAIR Le Duo Grande Airflow Styler
F tier #15 8 of 15 research runs entered this as a product to avoid rather than a pick. Dyson Airwrap Co-anda 2x
F tier #16 9 of 15 research runs entered this as a product to avoid rather than a pick. Conair Double Ceramic Curling Iron
F tier #17 3 of 10 research runs entered this as a product to avoid rather than a pick.