Structure of hair
All professional hair services must be based on a thorough understanding of this.
What is the growth, structure and composition of hair?
A small coned shaped elevation located in the base of the hair follicle that fits into the hair bulb.
What is the dermal papilla?
This layer provides a barrier that protects the inner structure of the hair, its responsible for creating the shine and the smooth, silky feel of hair.
What is the cuticle?
Proteins that are made of long chains, that are joined together end to end like pop beads.
What are amino acids?
Polypeptide chains are crosslinked like the rungs on a ladder, by these 3 different types.
What are side bonds?
This is the scientific study of hair and its diseases and care
What is trichology?
The tube like depression or pocket in the skin or scalp that contains the hir root.
What is the hair follicle?
The most inner layer of the hair and is composed of round cells.
What is the medulla?
The strong, chemical bond that joins amino acids.
What is a peptide bond?
This bond depend on pH, so they are easily broken by strong alkaline or acidic solutions.
What are salt bonds?
This the part of the hair located below the surface of the dermis.
What is the hair root?
The small involuntary muscle in the base of the hair follicle.
What is the arrector pili muscle?
The changes involved in oxidation haircoloring, wet setting, thermal styling permanent waving and chemical hair relaxing.
What is the cortex?
A long chain of amino acids linked by peptide bonds.
What is a polypeptide chain?
A strong chemical side bond.
What is a disulfide bond.
This includes the hair, skin, nails and glands.
What is the integumentary system?
Oil lands in the skin that are connected to the hair follicles.
What is the sebaceous glands?
Living cells form, they begin their journey upward through the hair follicles.
What is kerantinization?
Long coiled complex polypeptides made of amino acids.
What is a protein?
A weak physical bond, that is easily broken by water or heat.
What is a hydrogen bond?
The portion of the hair that projects above the epidermis.
What is the hair shaft?
The lowest part of a hair strand.
What is the hair bulb?
The major elements that make up human hair.
What are COHNS elements?
Carbon, Oxygen, Hydrogen, Nitrogen and Sulfur
The spiral shape of a coiled protein.
What is a helix?
Hydroxide chemical hair relaxers break disulfide bonds and then convert them.
What is a lanthionine bond?