The skin is the largest organ of the body and it has its own structure as well.
It has three main layers, the epidermis, the dermis, and the subcutaneous layer.
Epidermis: The outer layer
The epidermis is the thinnest layer, but it’s responsible for protecting you from the harsh environment, with 5 layers of its own. The epidermis also hosts different types of cells:
- Keratinocytes, which produce the protein known as keratin, are the main component of the epidermis.
- Melanocytes, which produce your skin pigment, are known as melanin.
- Langerhans cells, which prevent things from getting into your skin.
Dermis: The middle layer
The dermis is the layer that gives your skin its fullness and plumpness. Age and the sun can damage the dermis and lead to wrinkles.
The dermis is a complex combination of blood vessels, hair follicles, and sebaceous (oil) glands. Here, you’ll find collagen and elastin, 2 proteins necessary for skin health because they offer support and elasticity (your skin’s ability to go back to its original state after being stretched).
Fibroblasts are the cells you’ll find in this layer because they synthesize collagen and elastin. This layer also contains pain and touch receptors.
Hypodermis: The fatty layer
This layer is also known as the subcutis. It hosts sweat glands and fat and collagen cells and is responsible for conserving your body’s heat and protecting your vital inner organs. The reduction of tissue in this layer contributes to sagging skin.
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