The average adult head has about 100,000 to 150,000 hairs and loses up to 100 of them a day. Finding a few stray hairs on your hairbrush is not necessarily cause for alarm. But if you are concerned. A hair loss consultation is a good start for your research.
At any one time, about 90% of the hair on a person’s scalp is growing. Each follicle has its own life cycle that can be influenced by age, disease, and a wide variety of other factors. This life cycle is divided into three phases:
Active hair growth that lasts between two to six years
Transitional hair growth that lasts two to three weeks
Resting phase that lasts about two to three months; at the end of the resting phase the hair is shed and a new hair replaces it and the growing cycle starts again.
Hair shedding or hair loss
An overwhelming majority of the time the hair is on the scalp, it is growing. Only about 10% of the strands are in transition. Or resting at any one time. Hair grows about 6 inches or 9 cms a year for most people. Hereditary factors generally dictate hair characteristics.
Most people lose anywhere from 50 to 100 strands of hair each day. According to the American Academy of Dermatology. On the days when hair is washed, people can lose up to 250 strands. But don’t avoid washing in an attempt to keep the hair. As it will fall out eventually, anyway.
For those who don’t plan on counting their hair every day, there are ways to know when hair is thinning or being lost at a higher rate. Roberts tells WebMD that women will see a difference. When waking up in the morning, there may be a usually large amount on your pillow. When you comb your hair (especially without tugging, which can pull the hair out), more than normal will be left in the comb.