Hair extensions can lead to permanent baldness. Recent research published in the British Journal of Dermatology concludes that this problem may be much more common than has been reported.
According to the Daily Mail;
Dermatologists say the extensions, which are attached to a person's real hair by glue, weaving or braiding, put such tension on follicles in the scalp that they can become inflamed causing hair to fall out - a condition known as traction alopecia.
As a result, many women are left with permanent bald spots because the damage to follicles is irreversible.
Even women who had no visible signs of hair loss after wearing extensions had considerable underlying damage to the scalp when examined more closely, dermatologists from the University of Miami in Florida in the U.S. and Bologna University in Italy found.
Fears over the growing use of extensions first hit the headlines two years ago, when Victoria Beckham was photographed with a sizable bald patch after years of sporting false hair.