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Understanding Human Hair Growth

Understanding Human Hair Growth

Whether you are considering Austin laser hair removal or finding yourself overly annoyed with a receding hairline, it can be helpful to understand how human hair grows.

There are few places on the human body that don’t have, at least, a light dusting of fine hairs. Hair texture, length, and color can vary substantially from person to person, but each human has the same underlying cycle determining how much hair is present at any given time. The hair growth cycle has three distinct phases – the anagen, catagen and telogen stages.

Anagen Phase
This stage of hair growth is when hair follicles are at their most active. This single phase can last up to eight years and is the period when new hair grows. Each follicle operates on a unique schedule, so two that are side-by-side can be at entirely different phases. However, it is estimates that more than two-thirds of all hairs on the human body are in this stage of the growth cycle at any given time.

Catagen Phase
When the hair has stopped growing, it is considered to be in the catagen stage of the cycle. This phase is much shorter than the first, lasting, on average, just two weeks. During this period of time, the follicle shrinks, disconnecting from the blood supply beneath, so the hair no longer receives nourishment.

Telogen Phase
Many confuse this period of time as the point when hair falls out of the follicle, however that is not always the case. This is simply a stage when the follicle lies dormant. Often, it isn’t until the anagen phase starts again that the old hair is pushed out by the new hair, which will take its place.

Hair Changes with Age
As a person ages, hair, like most of the body, undergoes certain changes. Much of this is due to fluctuations in hormone levels. Hair loss can occur as the result of the growth cycle slowing, new hair can sprout in unusual places, and the melanin (cells responsible for giving hair its natural color) can begin to disappear causing gray hair.

Changes in sebum levels can also make hair brittle and dry; more susceptible to breakage. There are, of course, ways to combat this issue with the use of moisturizing shampoos and conditioners.

New Hair Growth
A common complaint among women, as they age, is facial hair. The sudden appearance is tied directly to hormonal changes. More specifically, women will experience the growth of coarse dark hair on their faces as a result of depleted estrogen levels. Electrolysis and laser hair removal are employed, in many cases, to rectify this situation.

Cadiz Laser Spa
115 Sundance Pkwy #230
Round Rock, TX
(512) 733-2639

Cadiz Laser Spa
5656 Bee Caves Rd #E201
Austin, TX
(512) 306-1619