Paul Mitchell Smooth+ Flat Iron
The “Smooth+” is praised for its 1.25-inch ceramic plates, quick heat-up and smart temperature control that adapts to hair thickness. Reviewers note it stays reliable for months with no overheating incidents, making it a long-term investment.
Consolidated from 4 independent outlets
Where the cited sources landed, as we read them
1 of 9 research runs entered this as a product to avoid rather than a pick.
Lower price point comes with thinner plates and less heat stability over time.
Flagged 26 July 2026
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Pros & cons
- ✓ Quick heat-up
- ✓ Smart temperature control
- ✓ Long-term reliability
- ✓ Goldilocks heat setting suitable for every hair type
- ✓ Best in Wired’s buying-guide
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. 1 outlet wouldn't let us check its link.
4 stance not read sources
wired.com Article Read Y 
Yahoo Shopping Beauty Article Read W Wired Article Read R r/BuyItForLife Article Read Frequently asked questions
It ranks #2 (S tier) on our consolidated hair straighteners board, drawn from 4 independent outlets.
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A tier #3 GHD Platinum+ Styler
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