Baliage is a French freestyle technique of creating natural, hand-painted highlights. In French, le balayage means "strands of color." The technique can be done in a chunky or subtle way, but the effect is generally softer since the highlights are more sparse than with a methodical aluminum foil technique. It's a great way to achieve a natural, beachy, and relaxed bright look.
Baliage is less time-consuming than getting a full head of traditional highlights. It is easier to maintain, too, since the roots will blend in with the rest of your hair as they grow in.