There are a lot of titanium curling irons and ceramic is included in some hot rollers and irons too. Is one better than the other? The short answer is: not necessarily. It is a fair question considering there's so much to pick from these days in the curling-tool arena. Once you know your stuff, you'll be able to pick out the best tool for you.
Negative ions are positively charged molecules in the air that neutralize positive ions. Positive ions cling to and create damaged hair. Static electricity, chemicals and traditional heating methods all do their fare share to create this positive charge that keeps the cuticles of your hair open and more susceptible to damage. The main benefit of ceramic in hot tools -- including curling tools -- is that it creates negative ions that can swoop in and eliminate positive ions. The result is shinier, less frizzy hair.
Even Heat Distribution
Uneven heat across the surface of a curling tool will result in much longer curling time, which affects the long term health of your hair. Titanium is a material that creates even heat distribution. A titanium coating on the iron will dramatically lessen the time it takes for your hair to curl, leaving you more time to pick your outfits and devise a makeup plan for the day. You can't argue with that.
Powers Combined -- Or Not
You don't actually have to pick between ceramic and titanium. A lot of curling irons have a ceramic heating element and a titanium-coated barrel. With these irons you get the combination of negative ions and shorter styling time. If you have particularly thick and frizzy hair, a tool that combines both of these materials is your best bet. On the other hand, if your hair is healthy and shiny all on its own, focus on titanium.
Titanium and ceramic aren't the only things to consider when you're checking out curling tools. You should always pick a tool with adjustable heat settings. Different hair types need different heat settings. If your hair is fine and thin, it will damage faster with an automatic setting of 400-plus-degrees Fahrenheit. If your hair is ultra thick, you might need that heat to manage it. Start on the lowest heat setting and work your way up until you get the results you're looking for.