The phrase "how many new hairs grow a day" refers to the average number of new hairs that appear on a person's scalp each day. This number can vary depending on a number of factors, including age, sex, and ethnicity. However, on average, most people grow between 50 and 100 new hairs per day.
The growth of new hair is an important part of the hair cycle. Hair grows in cycles, and each cycle consists of three phases: the anagen phase, the catagen phase, and the telogen phase. The anagen phase is the active growth phase, and it is during this phase that new hair is produced. The catagen phase is a transitional phase, and it is during this phase that the hair follicle begins to shrink. The telogen phase is the resting phase, and it is during this phase that the hair follicle is completely dormant.
