Airtouch highlights use a hair-colouring technique that provides seamlessly blended colour. They take longer than traditional highlights, but the result is super natural-looking. "Airtouch highlighting is a colouring technique where you take slices of hair and use a blow dryer to blow away the newer growth of the hair, leaving behind the older growth, so that you only highlight the oldest strands of hair," Papanikolas previously POPSUGAR.