By Erica Metzger
Men aren't the only ones worried about receding hairlines; according to the American Academy of Dermatology, 40 percent of American women have visible hair loss by the age of 40. And while men can blame genetics (it's the cause at least 90 percent of the time, say the experts), women's hair loss is triggered by a range of factors, including stress, illness, and hormonal changes. Your doctor can determine the reason you're losing hair and, most important, prescribe the right treatment. But thinning hair can also be a problem. As we get older, the diameter of individual strands decreases, which makes hair lose volume, says Philip Kingsley, a London-based hair expert. What helps: Massage your scalp regularly to stimulate your hair to grow faster and use products that strengthen and plump hair without weighing it down.
Try Kiehl's Ultimate Thickening Shampoo, $18; Angela Cosmai European Treatment for Thinning Hair, $50; and Nioxin Volumizing Reflectives Thickening Spray, $14.