Stages of Hair Growth
What MAKES HAIR GROW?
The hair growth cycle is the process in which hair strands grow, die, fall out, and regrow. Within the cycle are four distinct phases that dictate whether your hair is actively growing, resting, or shedding. Hair grows when the blood vessels within the follicles' base feed on nutrients. Like our basic carnal needs, our hair needs to eat in order to grow and be healthy.
4 phases of the hair growth cycle
From the moment the follicles produce new hair to when it starts to shed, each strand encounters the four phases of the hair growth cycle. At any point in time, strands of hair are each in different stages of the cycle.
Phase 1 - Anagon Phase
The first phase of the hair growth cycle when hair actively grows. About 85% of all the hair on your scalp is in the growth stage at any one time, and this phase lasts 3-5 years.
Phase 2 - Catagen Phase
The shortest phase in the cycle lasts only 2-3 weeks long, and hair transitions from growing to shedding. The hair bulb detaches, and the follicle shrinks and prepares for shedding.
Phase 3 - Telogen Phase
During this idle period, about 15% of hair rests for approximately three months. As these old hairs rest, new hairs begin the growth process.
Phase 4 - Exogen Phase
After hairs have had a nice long rest, shedding occurs. It's typical for people to lose 50-150 hairs a day during the shedding phase. Hair sheds to make room for new hairs to enter the growing (Anagen) phase again.
WHy DOES HAIR FALL OUT?
When shedding becomes excessive and falls out, it's because the Anagen phase slows down the production of new hair. There are many reasons for men's hair loss—from genetics to lifestyle. Medical illness, chronic stress, or environmental triggers can also disrupt the natural hair growth cycle. The first step is to identify the cause of hair loss, which helps to pave the best course of treatment. With the right solutions, you can regain control over the hair growth cycle and lay down the building blocks for a strong, healthy head of hair.