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The Life Cycle of a Strand of Hair

9/4/2017

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Each individual hair on your head goes through three phases in its lifetime.
  • Anagen is the longest phase.  The hair is growing. It usually last 2 to 3 years. If your hair stays short and never seems to grow--you have a shorter anagen phase. If growing long hair is no problem for you, you have a longer anagen phase.
  • Catagen or intermediate phase is the shortest phase. The lower 2/3 of the follicle is destroyed. It's preparing to shed.
  • Telogen is the resting or falling out phase.  When the hair has fallen out, the follicle is empty and is preparing to return to the anagen phase.

Parts of the hair and skin are a follows:


  • Papilla This is a group of specialized cells that are intertwined with capillaries. This is where a new hair develops.
  • Hair Follicle This is a sophisticated receptacle in the scalp from which the hair grows. Rapid cellular activity in the bulb is responsible for providing the cells to make form the hair shaft.
  • Sebaceous Gland This is an oil gland in the skin. It is hormone regulated and over production of hormones can form sebaceous 'plugs' that clog the follicles.
  • Capillaries   These are small blood vessels that carry oxygen and nutrients to the papilla as well as carry toxins away from the follicle.
  • Epidermis    This is the top layer of skin that joins the hair follicle.
  • Stratum Corneum  This is the layer of dead skin cells. When you exfoliate, this the layer of skin that you remove. Excess oil and debris can build up at the opening of the hair follicle and cause the follicle to be blocked.
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    Author

    Lynne Chapman served as Hair Site Editor of BellaOnline.com for fifteen years. She is a professional stylist and colorist of more than forty years.

    Get to know Rarity Peabody by reading The Evelynton Murder Series - beginning with Heart Strings.

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