We are born with the total amount of hair follicles we will ever have over our lifetime. There may be about 5 million on our body, but our head has about 100,000 follicles. As we age, some follicles stop producing hair, which is how baldness or hair thinning occurs.

The American Academy of Dermatology says that hair grows about 1/2 inch per month on average. That’s a grand total of about 6 inches per year for the hair on your head.

How fast your hair grows will depend on your:

  • age
  • specific hair type
  • overall health
  • other health conditions

Science has discovered a little bit about how hair growth is controlled at the cellular level in the body, but not enough to know how we can directly speed up hair growth. Read on to learn about the science behind hair growth and how to use that knowledge for healthier hair.

Hair grows in three stages, and each strand of hair follows its own timeline. These three stages are:

  • anagen: active growth phase of hair that lasts 2-8 years
  • catagen: transition phase where hair stops growing, lasts 4-6 weeks
  • telogen: resting phase where hair falls out, lasts 2-3 months

Science has discovered a little bit about how hair growth is controlled at the cellular level in the body, but not enough to know how we can directly speed up hair growth. Read on to learn about the science behind hair growth and how to use that knowledge for healthier hair.