BaByliss Thermal Ionics Permanent straightener, new from Conair Corp., promises silky, straight tresses without the need for blow-drying in as little as three hours, and lasts six to nine months. Administered in salons, the two-step process uses a ceramic flat iron that generates a negative iron field and thermally reconditions hair. A service can cost between $400-1000. After six weeks, the hair can be colored or permed....