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Hair Texture

The texture of your hair is determined by the size and shape of the hair follicle, which is a genetic trait controlled by hormones and related to age and racial characteristics.

Whether hair is curly, wavy, or straight depends on two things - its shape as it grows out of the follicle and the distribution of keratin producing cells at the roots. Straight hair is formed by roots that produce same number of keratin cells all round the follicle.

The natural color of hair also affects the hair texture Natural blondes have finer hair than brunettes, while redheads have the thickest hair.

Generally speaking hair can be divided into three categories - fine, coarse and thick. Fine hair can be strong or weak, however because of its texture, all fine hair has the same characteristic - it lacks volume. As the name suggests, medium hair is neither too thick nor too thin, and is strong and elastic. Thick and coarse hair is abundant and heavy, with a tendency to grow outwards from the scalp as well as downwards. It often lacks elasticity and is frizzy.

A single head of hair may consists of several different textures. For example, fine hair is often found on temples, and the hairline at the front and on the nape of the head, while the texture over the rest of the head may be medium or even coarse.

Ethnic Differences and Hair Textures

Scandinavians normally have thin, straight, baby fine hair and mid-Europeans have hair that is neither too fine nor too coarse. People native to the Indian subcontinent have coarse textured tresses, while Middle-eastern populations have strong hair. The hair of chinese and Japanese people is very straight

Hair Anatomy


Hair is mainly composed of a protein called keratin (about 88%). Keratin starts out as a soft substance arising from the follicle and keratinizes (hardens) as it rises up and out into the hair shaft. Keratin is insoluble, very tough, and highly elastic. The Follicle is an indentation that pushes down into the deep layers of the skin, and is where keratin develops. The Sebaceous gland is the individual hair’s well of natural oil. Too much or two little production of oil from this gland can cause symptoms of oiliness or dryness in the hair and scalp.

Cuticle


The thinnest, outer layer. Composed of transparent, overlapping, protective, scale-like cells pointing away from the scalp. Protects inner structure of the hair and is effected by chemical, physical, and thermal damage.


Cortex
The middle layer, comprising 75- 80% of the hair’s protein structure. Held together by a bond of positive and negative charges. Gives hair its strength and elasticity. Contains pigments which give hair its colour.


Medulla
The central axis of hair, containing a column of soft keratinised cells interspersed with air pockets, helping to give hair its elasticity.

 

In general, hair exists as one of these three shapes. As it grows, the hair shaft assumes the shape, size and direction of the follicle.


 

 
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