Hot Tools 24K Gold Extended Barrel Curling Iron has the best record for long hair, with 18 of 20 shoppers saying it curled their hair and the curls held, though every record here rests on a modest group. We could not confirm the exact Amazon listing for the leader, whose button searches Amazon instead, so the best pick sold on Amazon is Drybar 3-Day Bender Curling Iron at 14 of 21, nearly level with Bio Ionic Long Barrel Curling Iron at 9 of 13. Each record counts just shoppers who said they have long hair.
Updated . How we count
Share of reviewers who stated an outcome for curling long hair. Ranked by the lower bound of a 90% confidence interval, so a product needs both a good share and enough reports to rank high.
Best pick on Amazon Drybar 3-Day Bender Curling Iron 14 of 21 say it curled their long hair and the curls held See price & reviews on Amazon Reviews first posted on each maker's own site were more positive than the counted records for Bio Ionic Long Barrel Curling Iron and BaBylissPRO Nano Titanium Spring Curling Iron, at 5 of 5 and 6 of 6. We show those reviews but don't count them.
Praise and complaints are the points reviewers repeat most, shown as a share of each product's counted store reviews.
Hot Tools
Best for fast heat-up
Fast heat-up comes up in 57% of its 28 reviews, and 11% say it handles thick hair.
No repeated complaints yet.
Drybar
Tangling is the main complaint, raised in 30% of its reviews, and its 7 misses mostly said long hair got caught in the barrel.
Bio Ionic
All 4 of its misses said the curls didn't hold, while 33% of its 18 reviews say it heats fast.
No repeated complaints yet.
BaBylissPRO
Its 6 misses mostly said the barrel was too short for their long hair or the curls didn't hold.
No repeated complaints yet.
The 4 products ranked here carry 3,478 reviews at Ulta and Sephora. We searched them for curling long hair and read the newest matching reviews, up to 40 per product and store, posted between Feb 2014 and Jun 2026.
A review counts only when the reviewer used the product themselves. We drop reviews written in exchange for a free product or a sweepstakes entry (0 on this page), and products that are no longer sold.
Ulta also shows reviews first posted on brands' own websites. They run much more positive than store reviews of the same products (across 19 products with both, 76% of brand-site reviewers said the product solved the problem, against 55% of Ulta shoppers), so we show them on product cards but never count them.
Because we searched for the problem, people who had it are overrepresented. Compare products with each other rather than reading a share as your own odds.
Skin type, skin tone and age splits use what reviewers chose on Sephora's review form (and age on Ulta's when given). We only show a split when enough reviewers fall on each side.
Amazon buttons appear only on products that most reviewers here say fix the problem (at least 60%, with enough reviews to trust it). Everything else gets no buy link.
An AI model labels each review against a fixed list of points, and we spot-check the labels before publishing. We publish counts, never the reviews themselves.
Hot Tools 24K Gold Extended Barrel Curling Iron has the best record (18 of 20), followed by Drybar 3-Day Bender Curling Iron (14 of 21) and Bio Ionic Long Barrel Curling Iron (9 of 13), close enough to each other to treat as a tie. BaBylissPRO Nano Titanium Spring Curling Iron comes last at 3 of 9.
The second number in each record is the group size. Groups run from 9 shoppers for BaBylissPRO Nano Titanium Spring Curling Iron to 21 for Drybar 3-Day Bender Curling Iron, and the leader, Hot Tools 24K Gold Extended Barrel Curling Iron, has 20. Group size is already built into the order, so a card's rank reflects both its share and how many shoppers stated a result.
Drybar 3-Day Bender Curling Iron and Bio Ionic Long Barrel Curling Iron are sold on Amazon by the brand or Amazon itself. For the leader, Hot Tools 24K Gold Extended Barrel Curling Iron, we could not confirm the exact Amazon listing, so its button searches Amazon for it, which makes Drybar 3-Day Bender Curling Iron the best pick sold on Amazon. BaBylissPRO Nano Titanium Spring Curling Iron has no buy link here, because too few shoppers reported a good result for us to recommend it.
No. The counts are what shoppers with long hair said after using each iron, not a lab test, so follow the label directions.
HiveTried earns a commission when you buy through the Amazon buttons on this page. It never changes the ranking: the order comes from buyer reports only, and a product gets an Amazon button only when buyers here say it works.