Guido Palau (Redken): Marc Jacobs hair: she's rich, but she lives at night. She's an Edie Sedgwick, a very New York girl. She's around, you know? She's posh and she's had her hair done and thrown on some makeup to look more rock 'n' roll. I used Redken Guts in the hair as a boost before I back-dried it. The deep part is the most important part of the style, before it's swept over into that 'Edie bang' that adds the 'loucheness.' I used Dry Shampoo to ensure a matte texture and then the Quick Tease, which is really my new fashion product, to tease at the roots for a lift— you could use it at home, dry it in, and bend it over, and you've got a bump. I didn't want 'Amy Winehouse,' I just wanted a little bump that nodded to a style. It's tied into a ponytail and then I'm going to mess it up a bit more, so it looks like she had her hair done and then she slept in it, and she's going to go out for a coffee now and look super cool. That's our Marc Jacobs woman.

François Nars (Nars): Marc wanted to make the eyes more extreme, and this makeup makes them almost double-sized. I drew an elongated line across the crease of the lids with the Mambo Eyeliner Pencil, and accented with the Duo Eyesshadows in Pandora, Portobello and Key Largo. The brows are thick, darkened and exaggerated with Bali and Bengali single eye shadows... If you wanted to wear this in your everyday life, you could do it without the eyebrows—unless you had the guts to do it. [Laughs] But, in general you could easily keep the look and just make it a little softer. The lip has been taken down a bit with foundation to a matte finish. I love the '60s. To me, that time period is so inspirational. That was a big influence here. The '60s were so incredibly modern: the style, the clothing, the hair and makeup—whatever ‘modern’ means—it felt very very ‘today.’ For me, I don’t care if it’s spring, summer, fall or winter, as long as she looks strong, as long as she looks powerful.

—as told to ITG

Photographed by Emily Weiss at the Lexington Avenue Armory in New York on September 10th, 2012.