Many possibilities: Hair "turns over" faster than just about anything else in the body, and many things - from illness to injury to surgical procedures to hormonal imbalances to infections to stress - can interfere with the normal hair cycle. Don't waste your money on tonics and "hair vitamins". Let a dermatologist go through the possibilities and find the cause. (the yellow stuff on the roots is normal.).
Answered 12/9/2013
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