The deep side part isn't revolutionary, but here's why you should wear it: It can modernize a classic hairstyle, it creates volume in a face-flattering way and it's simple to do yourself. Whether you're wearing braids, hair accessories or the aforementioned messy bun, a deep side part is a great starting point. "And tuck it behind the ear -- it's quite minimal and cool," says Eugene Souleiman, Global Creative Director for Wella Professionals.

Our favorite examples (clockwise from top left): Tresemmé for Banana Republic, Kérastase for Rodarte, Redken for Hugo Boss, Tresemmé for Herve Leger

Nail art isn't going anywhere, but it's definitely subtler than in seasons past. And the biggest nail art trend, hands down (pun intended), is anything linear. "I'm seeing a lot of lines this season -- and often paired with negative space," says Morgan Taylor lead artist Gina Edwards (who created the look at Noon by Noor, top left). "I believe nail art is going to be around, but it's all a matter of taste."

The best thing about linear nail art is just how easy it is to recreate on your own. Dip an old liquid eyeliner brush in polish, and drag it across your polished or bare nails. It doesn't have to be perfect to look cool.

Our favorite examples (clockwise from top left): Morgan Taylor for Noon by Noor, Essie for Brooks Brother by Zac Posen, Sally Hansen for 3.1 Philip Lim, Orly for Marissa Webb

Almost all the nail artists I talked to backstage believe dark manicures will be a trend for spring. "I'm seeing oxbloods and blacks for springtime," says nail artist Jin Soon Choi (she created the look at Derek Lam, bottom right, using Jin Soon Polish in Risque). "It's easy and so, so cool -- it contrasts the clothes in a way that feels fresh." And because it's decidedly un-spring-like, you don't need to hesitate to wear it now.

Our favorite examples (clockwise from top left): Zoya for Zang Toi, Deborah Lippmann for Creatures of Comfort, Jin Soon for Derek Lam, Essie for Wes Gordon