Average Hair Growth Rate of Head Hair and Limits on Hair Growth

| August 19, 2010 | 0 Comments

Almost every culture gives inordinate attention to head hair, and social significance is attached to hair style. Very long hair is of particular interest, not only because it takes a long time to achieve lengthy locks, but also because not everyone can have lengthy hair. Despite all the products and treatments, maximum hair growth ultimately depends on biological factors.

Average Hair Growth Rate

The lengths of hair growth phases are not the same in all individuals. For head hair, a normal Anagen phase can last anywhere from 2 to 6 years, Catagen for 1 to 2 weeks, and Telogen for 5 to 6 weeks. During the Anagen phase, the average hair growth rate of head hair is around 6 inches per year.

Limits on Hair Growth

The length of the Anagen phase limits the maximum hair length you can achieve. At any given time, approximately 85% of the hairs on your head are in the Anagen phase. Your hair growth rate also determines how ling your hair will be. The average time for which your Anagen phase should last in order for you to get waist-length hair is 6 years.

Effect of Health and Medical Treatments

Health conditions and medical treatments can considerably effect hair growth. Malnutrition can result in a percentage of hair follicles not growing hair anymore, and the remaining follicles producing fine, fragile hair. Chemotherapy often results in the complete stoppage of hair growth. In both these cases, hair will start to appear on your scalp when your diet improves or after chemotherapy is over. Other ailments such as Alopecia Areata can result in complete baldness that is sometimes irreversible. What causes this condition is not yet fully understood.


In some people, the Anagen phase is longer than the normal. The hair of these people may grow to floor-length or longer. On the other hand, an abnormally short Anagen phase makes it difficult for people to grow even shoulder-length hair. Hair breakage as a result of chemical or heat processing or inherent fragility may also considerably affect hair length, but is not related to hair growth.


Male pattern baldness is due to normal male hormones and genetic predisposition, and not due to the health of your hair or scalp. Therefore, treatments that claim to slow down or reverse hair loss by delivering vitamins or moisturizing the scalp are ineffective. However, hair creams that counteract male hormones locally at the scalp have reduced hair loss in some men.

Tags: , , , , , , , , , ,

Category: *Hair Growth Main Menu, Baldness, Hair Growth Products, Solutions For Hair Growth

About the Author ()

Leave a Reply

Your email address will not be published. Required fields are marked *