
It is possible to classify the different hair types using the Andre Walker system, where each type; is further branched into their respective subcategories. These pertain to texture, curl, thickness, susceptibility to damage and ease of styling. See below a table which explains the different hair types in more detail.
Hair is composed of a protein called keratin, which sprouts from the epidermis of the root. The base of the hair shaft, known as the hair bulb lies within the epidermis. The dermal papilla provides the blood supply to the epidermis and is situated at the base of the hair bulb, to provide nourishment for the hair that grows from it. Glands are responsible for equipping both the hair follicles and the hair shaft, with the natural oils and keeping them healthy.
There are three stages of this cycle, from the beginning with the growth at the root to hair shedding.
- Anagen
- A hair follicle's growth period.
- Possible duration of 3-5 years.
- Catagen
- The intermediate stage, of which the hair follicles prepare to rest.
- Possible duration of 1 to 2 weeks.
- Hair follicles start to collapse around the base.
- Telogen
- Final stage - the shedding of the follicles.
- Possible duration of 3 to 4 months.
On completion of the three stages, the hair growth will begin again from the first step and, the cycle continues allowing new hair growth.
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