We are born with about 100,000 hair follicles on our scalps, and, like fingers and toes, this number is all we get for life. Some follicles stop producing new hair growth as we get older, which results in thinning hair and baldness. Scalp hair growth rates are about one centimetre a month, which is a rate of about 0.36 millimetres a day, and around 12cm a year. However, hair growth for men and women naturally varies, depending on ethnicity, gender, health, hair colour, and age.
Hair is made of protein, sulphur and water. Regular exercise can increase blood flow to your scalp, which also helps hair to grow since it brings nourishment and oxygen to the follicles. Hair regrowth treatments from Bioscor can also help regrowth for men and women.
Hair grows in four stages, with each strand following its own growth phase, which means every strand can be at a different stage of the growth cycle. They are:
- Anagen: (The growing stage) lasting from two to seven or eight years.
- Catagen: (The transition stage) lasting about 10 days – the follicle shrivels and breaks from the papilla.
- Telogen: (Resting stage) This lasts about three months. From 10 to 15 per cent of hairs are in this stage at any given time. While the older hairs are resting, new hair begins its growth cycle.
- Exogen: (New hair stage) This is part of the resting stage in which older hairs are shed, and new hair grows. During this stage, from 50 to 150 hairs can fall out each day, which is normal hair shedding.