Bio Ionic Long Barrel Curling Iron

It ranks #1 (S tier) on our consolidated curling irons board, drawn from 4 independent outlets.

It is for anyone who wants the best all-round curling iron, and especially for people with longer hair or hair that damages easily. It is our number one pick in S tier, with a ceramic barrel that holds a steady temperature and keeps heat damage low. If you style hair every day and want the most durable build, the Hot Tools Pro Artist Digital Curling Iron, also in S tier, is the better fit. If you want to spend as little as possible, the BaBylissPro Nano Titanium Spring Curling Iron in B tier is the budget pick.

Yes. Reviewers credit its precise temperature control with minimal heat damage, and the ceramic barrel heats evenly rather than in hot spots. Use the lower end of its heat range for fine hair and raise it only if the curl drops.

Yes, the long barrel is its main design point. It wraps a full length of long hair in one pass, which reviewers say makes styling longer hair easier and gives a more natural curl. Short hair gains less from the extra length.

It has a ceramic barrel. Ceramic heats more gently and evenly than titanium, which is why it suits fine and damaged hair. If you have very thick hair that needs higher heat, the titanium BaBylissPro Nano Titanium Spring Curling Iron is the board's titanium alternative.

Unplug it and let it cool fully. Wipe the ceramic barrel with a soft cloth dampened with warm water, or with rubbing alcohol for product build-up. Never use abrasive pads, since scratches in the ceramic will snag hair and heat unevenly.