7. She takes her vitamins.
Even if your diet is impeccable, it’s possible you’re missing out on some crucial hair-boosting vitamins. Not sure if you need them? Dr. Frank Lipman, founder of Eleven Eleven Wellness Center, says the answer is in how healthy (or not-so-healthy) your skin and nails look. For example, if your fingernails are ridging and/or if you have dry, flaky skin, chances are your hair is crying out for help, too. But that’s easy to reverse: Once you start taking the right combo of vitamins, minerals, amino acids, and herbs, you can get fuller, shinier, and stronger hair in just a few months. Bonus: Your nails and skin will also benefit.