How To Get Hair You've Always Dreamed Of

2. Health: the well-fed head
Since survival is about adapting to the environment, by now, hair should be extinct. For while we embrace 21st-century techniques-coloring, perming, and heat-styling-the strand itself hasn't evolved (it's still the fragile fiber it's always been). Unless we protect it from modern processing, it will perish-or at least look like death. "The secret to healthy hair is feeding the follicles," explains celebrity stylist Oscar Blandi (who has coiffed Tom, Katie, and Suri!). Use a protein-rich shampoo every other day, he suggests, to avoid depriving strands of the scalp's natural oils. The protein will also increase hair's elasticity, adds Trevor Attenborough of Nioxin, "so it's better equipped to withstand the elements." Once a month, indulge in an exfoliating scalp treatment to encour-age healthy hair growth-and, daily, eat foods (or take a supplement) rich in zinc (fish and nuts), vitamin C (citrus), and iron (spinach) to build strength.