Ionic hair dryers work by emitting negative ions that reduce drying time and leave hair looking better than with normal dryers. They function through a process called the corona effect where an electric field ionizes air molecules near tiny stainless steel pins. Customers report that ionic dryers dry hair faster and produce a better result than conventional dryers due to the ions helping the drying process. Vapolli is an online retailer that sells ionic hair dryers and other beauty products.