15 Hair-Color Terms to Know Before Your Next Salon Appointment

"Spongelights" are highlights created with a sponge. It's a new emerging trend that's just barely started in salons, but pretty soon it will be the talked-about technique. "It's a form of hair painting," Hill says. "You apply color with a sponge, and it just touches the surface of that hair, so you're not penetrating it." The effect is sun-kissed, barely there color.