Following two seasons of platinum blonde loyalty and a Fall outing that made shades of deep brunette the runway hair hue du jour, the Spring 2013 shows are at a little bit of a color impasse. Castings have been relatively equal opportunity, with a lot of designers—Alexander Wang and Roberto Cavalli to name a few—requesting deliberately dark and light-haired models for the corresponding black and white sections of their presentations; Marc Jacobs, who ushered in the graphic trend with his Edie Sedgwick sixties salute, went as far as to have Laurie Foley take models black or white-gold, accordingly. Which is why it’s been hard to miss Irina Kravchenko. The Ukrainian newcomer who, despite opening Wang’s show, had a slow start in New York is killing it in Europe—not least because she remains one of the only redheads in this season’s catwalking crew. After staring at her from afar at Prada, Bottega Veneta, Jil Sander, Marni, and Roberto Cavalli this week, we finally managed to get the scoop on those gorgeous ginger-auburn locks—despite some initial trouble understanding one another (beauty is an international language, don’t you know). “It’s blonde naturally,” Kravchenko revealed after we maniacally pointed and gestured to her hair (then ours). The word “salon” helped solicit the revelation that she has no need for one, as she does her dyeing herself with—get this—”chenna.” Henna? “Chenna—from grass,” Kravchenko reiterated. That’s right; those rich, show-stopping strands are the result of an at-home application of the plant that has long been used to dye fabrics, skin, nails—and hair. The style set’s superstar colorists are no doubt chomping at the bit to get their hands on this one.