Last Updated on October 16, 2013.

Healthy Skin

  • The epidermis and dermis are the two primary mammalian skin layers.
  • The epidermis is the topmost layer is the selectively permeable skin barrier.
  • It is called the dead skin layer, which provides waterproofing and serves as a barrier to damage.
  • The dermis serves as the location for appendages of the skin including hair follicles and quills.
  • Healthy skin is important to maintaining a formidable barrier to external stimuli including protecting against dehydration,  environmental changes, and diseases such as bacterial infection.
  • Any modifications to the skin’s barrier equilibrium may trigger skin conditions such as dryness, itchiness, or dermatitis (inflammation of the skin)
    • Healthy skin can be hard to maintain due to numerous environmental factors
    • Temperature
    • Sun
    • Pollution
    • Water itself can cause dry skin if one showers in excess or in hot water because it removes the oils the skin naturally secretes for moisture.

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