thinning hair

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You're Noticing: Thinning Along the Hairline

Likely cause: Regularly yanking your hair back into too-tight styles
Why it leads to thinning: Putting tension on the hairs at the front of your scalp can make them fall out. There's even a name for this type of thinning: traction alopecia. (Going overboard on hair extensions can also cause traction alopecia wherever the extensions are attached, says Doris Day, MD, a clinical associate professor of dermatology at NYU Langone Medical Center, in New York.)
How to fix it: First, be gentler to keep the problem from getting worse. If your go-to style is a ponytail or bun, use your fingertips to feel around your temples and crown and make sure you can move your hair a little. Minoxidil (the only FDA-approved topical treatment to regrow hair) can help fill in the sparse areas.