Each strand of hair has its own life cycle. Growth happens in four stages: anagen, catagen, telogen, and exogen. The hair ...

Scientists don't know exactly how minoxidil works. It may affect the different phases of the hair life cycle, thereby encouraging growth. It also opens up blood vessels near hair follicles.

The average scalp contains about 100,000 to 150,000 hair. The normal hair life cycle lasts for two to three years. At any given point of time, about 90% of the hair on your scalp is growing and ...

Researchers explain how prolonged stress and malnutrition affect hair’s life cycle and accelerate scalp aging. Extreme psychological stress is one of the most significant factors in premature ...