Hair is the one part of our body most of us wish were a little fatter.

And while some women are born with thin hair, many will develop it over time.“Usually, women have breakage or hair loss caused by chemical treatments or flatiron abuse, but a health condition like anemia or a thyroid problem can also be the culprit,” says Francesca Fusco, M.D., an assistant clinical professor of dermatology at Icahn School of Medicine at Mount Sinai School of Medicine. Other common causes include stress and hormonal shifts (women may shed hair for up to a year after having a baby). If you notice dramatic or unexplained hair loss, see your doctor. Everyone else: Try these simple mane-thickening moves!


Being married to your flatiron or getting highlight-happy can put you on the fast track to thin hair. “High heat and chemical overload can weaken and dry out the hair, leading to breakage called trichorrhexis nodosa, and can put a strain on hair follicles and prevent healthy hair growth,” says Fusco. Once a week, after shampooing, thoroughly rub a rich treatment mask into your scalp and hair, and rinse after three minutes.

Try: Clear Scalp & Hair Deep Hydrating Treatment Mask ($5, at drugstores), which contains vitamins B5 and E and proteins to help strengthen hair over time, making it less likely to snap off.

Source: Women’s Health. March, 2014.