Hair
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Understanding Human Hair: More Than Just Aesthetic Appeal
This guide delves into the composition, function, and significance of hair in human health and society.
Composition of Hair
Hair is primarily made of a protein called keratin, produced by follicles in the skin. It comprises three layers:
- Medulla: The innermost layer, soft and flexible.
- Cortex: The middle layer, responsible for hair's colour and texture.
- Cuticle: The outer layer, made of overlapping scales to protect the hair.
Key Functions of Hair
- Protection: Shields skin from environmental factors like the sun, wind, and rain.
- Insulation: Helps in regulating body temperature, especially on the scalp.
- Social and Cultural Significance: Reflects personality, cultural identity, and personal style through various hairstyles and colours.
Vulnerability of Hair to Damage and Disease
Conditions such as alopecia and pattern baldness can lead to hair loss, affecting self-esteem and quality of life.