Not so new of a technique. But let’s call it the new rave, of cutting. Weight removal with stroke cutting. You emulate the cut as if it grew out already. So maintenance is lower and the cuts last longer.
ba·lay·age balāˈyäZH/ “a technique for highlighting the hair in which the dye is painted on in such a way as to create a graduated, natural-looking effect.” ombré ˈäm-ˌbrā/ “having colors or tones that shade into each other, used especially of fabrics in which the color is graduated from light to dark…”