Q:

What is hair made up of?

A:

Hair is made up of a protein called keratin and it's simple in structure. The hair follicle holds the hair and keeps it connected to the surface of the skin.

The hair bulb forms around the hair follicle. Inside of the hair bulb, the cells divide and build the hair shaft to create the full hair strand. Blood vessels deliver the nutrients that the hair needs in order to grow and structure itself.

Hair growth takes place in three forms: anagen, catagen and telogen. The anagen phase is also known as the growth phase because the hair grows continuously. Each hair on the head will spend multiple years in this phase before moving into the next phase. Catagen is known as the transitional phase and is when the hair growth begins to slow while the hair follicle shrinks. The telogen phase is the final phase and consists of hair growth coming to a complete stop, with the old hair falling out and new hair coming in.

Different people have different rates of hair growth, although the most common growth rate is about one half inch every month. Hair color is determined by the pigment cells that produce melanin. As a person ages, their hair will turn gray or white because the pigment cells will die off.

Learn More
Sources:

Related Questions

  • Q:

    How do you straw set hair?

    A:

    To straw set hair, wrap small locks of hair around drinking straws, securing each with bobby pins, and let the hair set until completely dry. Remove the straws, and gently separate curls with fingers.

    Full Answer >
    Filed Under:
  • Q:

    What are some hair tips for dry hair?

    A:

    Tips for managing dry hair involve choosing the correct hair care products and treating the hair gently. Avoiding dry hair to begin with and determining the cause of the dryness are also useful.

    Full Answer >
    Filed Under:
  • Q:

    Does dirty hair grow faster than clean hair?

    A:

    There is no research that suggests dirty hair grows faster than clean hair. The hair must be washed regularly to maintain a healthy scalp.

    Full Answer >
    Filed Under:
  • Q:

    How do I get permanent hair dye out of my hair?

    A:

    Hair dye can only be removed with bleach, so to remove permanent hair dye, apply a soap cap. If necessary, tone and re-color the hair. Removing permanent hair dye takes roughly 45 minutes plus re-coloring time and requires shampoo, hair bleach, conditioner and protective gloves. If re-coloring the hair, food coloring and hair color are also needed.

    Full Answer >
    Filed Under:

Explore