Skin is the largest organ of the body. It protects other organs from external dust, pathogens and other harmful ingredients. It is a fine and thin layer doing a gatekeeper and defender’s job.
What is skin made of?
Skin consists of three layers:
- Innermost layer: It is a subcutaneous layer formed of fat. The fat layer helps to insulate the body from external temperature changes and body heat from getting dissipated.
- Second layer: This is a ‘Dermis’ layer containing all the nerve endings. It contains hair follicles, sensory nerve endings and blood vessels. This is the layer, which communicates brain about the pressure or pain felt by the skin.
- Third Layer: This outermost layer is called ‘epidermis layer’. It consists of layers of dead cells. The major function of this layer is to keep harmful substance away from the body. It is highly regenerative and replaces itself very fast on an injury.
Structure of skin barrier
The third layer provides ‘skin barrier’. It is made out of dead cells aka ‘stratum corneum’. Stratum corneum consists of ‘corneocytes’, which is bound together with lipids and fat layers known as ‘Lamellar Membranes’.
Functions of skin barrier:
How skin barrier protects
- To protect internal organs of human body from dust, pathogens, allergens and other deadly microorganisms
- To capture hydration within the body and do not let it evaporate
- Skin barrier if disturbed may lead to dermatitis, Psoriasis and ichthyosis
- To regulate the internal temperature of the body.
- It is the largest excretory organ of the body. It pushes out toxic waste through sweat.
- Skin barrier protects us from sun’s UV rays. It produces melanin and vitamin D which supports our internal health.
In my next post, I will discuss what harms the skin barrier and how to protect it from any disruption. Skin is the first step towards our external beauty let’s make it better.
Photo credits:1, 2, 3
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