Your Hair Structure

To truly understand hair loss, you first need to understand how your hair is built. From the follicle deep within your scalp to the strand you see in the mirror, every part of your hair plays a vital role in its growth, strength, and longevity.

Explore how hormones, genetics, and aging impact your hair at the structural level—and why targeted treatments must start at the root.

Your Hair Structure

Hair Types

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.

Type 1: Straight

1a Straight (Fine/Thin) Hair tends to be very soft, shiny, oily, poor at holding curls but difficult to damage
1b Straight (Medium) Hair characterised by volume and body
1c Straight (Coarse) Hair tends to be bone-straight and difficult to curl. Common in Asian women

Type 2: Wavy

2a Wavy (Fine/Thin) Hair has a definite ‘S’ pattern and is usually receptive to a variety of styles
2b Wavy (Medium) Can tend to be frizzy and a little resistant to styling
2c Wavy (Coarse) Frizzy or very frizzy with thicker waves; often more resistant to styling
Type 1 Straight
Type 3 Curly

Type 3: Curly

3a Curly (Loose) Curly hair that usually presents a definite ‘S’ pattern and tends to combine thickness, fullness, body and/or frizziness
3b Curly (Tight) As 3a but with tighter curling like a spiral

Type 4: Kinky

4a Kinky (Soft) Hair tends to be very fragile, tightly coiled and can feature curly patterning
4b Kinky (Wiry) As 4a but with less visible (or no) curly patterning
4c Kinky (Wiry) As 4a and 4b but with almost no defined curl pattern

Hair Structure

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.

Catagen

Hair Growth Cycle

There are three stages of this cycle, from the beginning with the growth at the root to hair shedding.

  1. Anagen
  • A hair follicle’s growth period.
  • Possible duration of 3-5 years.
  1. 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.
  1. 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.

Catagen
/* ]]> */ /* ]]> */