Pureology revamped its popular Pure Volume system with lighter-weight formulas that maximize volume for fine, color-treated hair, according to the company. It also rolled out a new Instant Levitation Mist, a breakthrough heat-protective spray that weightlessly elevates fine color-treated hair for 24 hours of volume.   “Many of my clients with fine or flat hair come into the salon looking for new ways to add volume and body without leaving hair sticky, and stripping their color,” says Natasha Su...