Philip Kingsley
about hair / biology / how long will my hair grow?
Your hair grows in phases. The hair growth cycle consists of three distinct stages:

anagen
catagen
telogen

At the end of each resting phase the growth phase restarts and the whole process is repeated. Each follicle has its own independent cycle, otherwise all your hair would fall out at once! Instead you only lose a certain number of hairs a day. The cycle can be disrupted by metabolic circumstances and even by external trauma, such as too much pulling or brushing.

anagen



A growing stage that lasts an average of three to five years. During its growth phase, hair grows about 1.25 centimetres a month - faster in summer than in winter.

catagen



A short transition phase that lasts two weeks.

telogen



A resting phase that lasts three months.