1. Don't be a perfectionist.
'This one's hard for me, too. But the thing that makes 'model off-duty hair' work is the effortlessness of it. Let. It. Go.'
2. But exercise some control—strategically.
'Take a look in the mirror. Ask yourself, 'Which messy bits look romantic and beautiful, and which ones just look messy?' Now go ahead and polish any ends that just look wacky, or any strange and chaotic cowlicks or bumps. It's okay to try just a little. Trust me, models do.'
3. Use your hands as a brush.
'This way things stay casual. Pull and twist a healthy dose of a shine serum through the lengths of the hair like it's a rope, making sure to get the ends moving in one direction, then release the rope for off-duty realness.'
Editor pick: Oribe Gold Lust, $48; net-a-porter.com
4. A less-than-fresh blowout is key.
'Most models are rocking day-old blowouts. If you aren't one of the lucky ones who really do have natural 'I woke up like this' texture, plan ahead. Blow and curl your hair like you're working for Victoria's Secret on Saturday night, go to sleep and wake up with cool girl hair for Sunday brunch!'
5. Keep your layers long and your ends textured.
'Brooklyn Decker once told me that the reason she loves my cuts is that she leaves Wonderland Beauty Parlor with a blank canvas to go to work with. Ask your hairdresser for subtle layers and to keep the ends a little imperfect. Hard edges look great when they're perfectly positioned, but don't do well the morning after.'
'Most models want nothing to do with a blow dryer or curling iron when they're off-duty. If you've got a natural texture that you can love (or at least like), try letting your hair air dry with a styling creme like Shu Uemura's Satin Design or Tasai Cream (depending on your natural texture) or a non-crunchy mousse like R+Co's Chiffon.'
7. Avoid a stripy root line.
'Add highlights to your natural color to add dimension but don't change your base color. Once that happens you get the dreaded 'root line.' This way if you're jet-setting between New York and Milano and miss a salon visit, you look ombré-ed and relaxed, rather than grown-out and neglected.'
8. Invest in great shampoos and conditioners.
'Let's face it, model's hair takes abuse, even in the most caring hands. Great haircare is the best way to keep their, and your, crowning glory ready for a last-minute call from a casting agent or the boy next door. Be diligent; let your conditioner sit for the recommended time and do a weekly masque. If you color or highlight your hair make sure that you choose haircare that will prolong the life of your tint.'
Michael's pick: Oribe Shampoo for Beautiful Color, $38; wonderlandbeautyparlor.com
9. Don't curl your roots or ends.
'Add some bend to your hair with an iron or wand but make sure that you a) alternate directions with the curls and b) focus your efforts on the mid-shaft of the hair, so you can avoid looking like a pageant queen. Add a little 'next day' finish with a blast of salt spray.'
10. A quick top knot can take the poof out of your hair.
'If your hair gets big and you want it to be a little lankier, put it up in a bun or top knot for a few hours before your arrival. This trick will stretch the root/mid-sections, so your hair will hang instead of bounce.'
For more insider fashion and beauty tips, see all Tricks of the Trade posts here. Related: How to Shape Your Eyebrows Related: How to Get Fuller Eyebrows in 8 Easy Steps