# Paul Mitchell Smooth+ Flat Iron

- Source: https://stierproducts.com/products/paul-mitchell-smooth-flat-iron
- Category board: https://stierproducts.com/categories/hair-straighteners
- Placement: #2 of 13 in Hair Straighteners, S tier
- Brand: Paul Mitchell
- LP on this board: 887
- Last researched: 2026-07-27T08:17:04.299Z
- Method: https://stierproducts.com/methodology
- Dataset: https://doi.org/10.5281/zenodo.22062813 - every board at once, one dated snapshot per release, same licence, prices and photographs left out
- Reuse: Text, rankings, tier assignments, LP values and verdicts are free to quote and reuse with attribution to stierproducts and a link to the source URL (CC BY 4.0: https://creativecommons.org/licenses/by/4.0/). Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.

## Verdict

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.

## For

- Quick heat-up
- Smart temperature control
- Long-term reliability
- Goldilocks heat setting suitable for every hair type
- Best in Wired’s buying-guide

## Flagged as one to avoid

This product entered 1 of 9 runs as one buyers cross-shop but should not buy, rather than as a pick. It is published here rather than dropped.

## Evidence

Consolidated from 3 independent outlets

| Outlet | Said by | Stance | Link | Link status |
| --- | --- | --- | --- | --- |
| Wired | - | B | https://www.wired.com/gallery/best-hair-straighteners/ | fetched and confirmed |
| Yahoo Shopping Beauty | - | - | https://shopping.yahoo.com/beauty/hair/article/best-hair-straightener-160742853.html | fetched and confirmed |
| r/BuyItForLife | - | - | https://www.reddit.com/r/BuyItForLife/comments/1opsvnf/the_best_hair_straightener_to_buy_right_now/ | outlet blocks automated checks |

## Nearest alternatives on this board

| Rank | Product | Tier | Page |
| --- | --- | --- | --- |
| 1 | GHD Chronos | S | https://stierproducts.com/products/ghd-chronos |
| 3 | GHD Platinum+ Styler | A | https://stierproducts.com/products/ghd-platinum-styler |
| 4 | T3 Lucea Straightening Iron | B | https://stierproducts.com/products/t3-lucea-straightening-iron |
| 5 | Chi LAVA Volcanic Ceramic Hairstyling Iron | B | https://stierproducts.com/products/chi-lava-volcanic-ceramic-hairstyling-iron |
| 6 | Dyson Airstrait | C | https://stierproducts.com/products/dyson-airstrait |
| 7 | Kristin Ess 3-in-One Hair Straightener | C | https://stierproducts.com/products/kristin-ess-3-in-one-hair-straightener |
| 10 | Dyson Corrale Hair Straightener | F | https://stierproducts.com/products/dyson-corrale-hair-straightener |
| 11 | Remington ONE Straightener | F | https://stierproducts.com/products/remington-one-straightener |
| 12 | GHD Gold Styler | F | https://stierproducts.com/products/ghd-gold-styler |
| 13 | BaByliss Super Straightener | F | https://stierproducts.com/products/babyliss-super-straightener |

The full board is at https://stierproducts.com/categories/hair-straighteners.

## What this tier means

- S: Exceptional. Finishes top run after run; capped at 3 slots per category.

## How to read this

- Each category is researched in four independent runs, one per lens (expert consensus, value, reliability, community pulse). Every run ranks a board of candidates that deliberately includes products buyers cross-shop but should avoid. Placements score on a ranked ladder (LP), and tiers are derived from LP, so no tier is ever assigned by hand.
- LP is this product's points on its own category ladder. It is comparable within a category and not across categories.
- Link status reports what our pre-publication link check found when it fetched the cited URL. It says nothing about the quality of the review.
- A citation with no usable link is listed rather than dropped, and is excluded from the counted total above.

## Image

https://stspimgdevmfyk46r5vwkay.blob.core.windows.net/images/products/paul-mitchell-smooth-flat-iron.webp

Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.