Bigger isn't always better
is an autoimmune disorder that causes the affected hair follicles to be mistakenly attacked by a person’s own immune system. White blood cells stop the hair growth during the anagen phase. It is a highly unpredictable skin disease that affects an estimated 5 million people in the United States
What is Alopecia Areata?
All natural hair color is the result of these 3 pigments located within the cortex.
What are Melanin, Eumelanin and Pheomelanin?
the tube-like depression or pocket in the skin or scalp that contains the hair root.
What is HAIR FOLLICLE?
the outermost layer of the hair. It consists of a single overlapping layer of transparent, scale-like cells that look like shingles on a roof.
What is Hair Cuticle?
proteins are made of these long chains, units that are joined together end to end like pop-beads.
What are Amino Acids?
hair texture has the largest diameter.
What is Coarse Hair?
this refers to the shape of the hair strand. It is described as straight, wavy, curly, or extremely curly.
What is Wave Pattern?
the lowest part of a hair strand. It is the thickened, club-shaped structure that forms the lower part of the hair root.
What is Hair Bulb?
is the middle layer of the hair. It is a fibrous protein core formed by elongated cells containing melanin pigment. About 90 percent of the total weight of hair comes from here.
What is the Cortex?
the strong chemical bond that joins amino acids
What is a Peptide Bond?
the thickness or diameter of the individual hair strand. Hair texture can be classified as coarse, medium, or fine
What is Hair Texture?
3 phases of the Hair Growth Cycle
What are Anagen, Catagen, and telogen?
is a small, cone-shaped elevation located at the base of the hair follicle that fits into the hair bulb.
What is the Derma Papilla ?
is the innermost layer of the hair and is composed of round cells. It is common for very fine or naturally blond hair to entirely lack this
What is Medulla?
3 Types of side bonds
What are Hydrogen, Salt and Disulfide?
measures the number of individual hair strands on one square inch (2.5 square centimeters) of scalp.
What is HAIR DENSITY?
is the ability of the hair to stretch and return to its original length without breaking.
What is Hair Elasticity?
is the small, involuntary muscle in the base of the hair follicle.
What is Arrector Pilli muscle?
a fibrous protein
What is Keratin?
Water and Heat break what kind of Bond in the hair?
What is Hydrogen bond?
is hair flowing in the same direction, resulting from follicles sloping in the same direction.
What is a Hair Stream?
Dry hair and scalp should be treated with products that contain ....
What are moisturizers and emollients?
connected to the hair follicle these guys secrete a fatty or an oily substance called sebum.
What are sebaceous glands?
COHNS Elements- the major elements that make up the human hair.
What are Carbon, Oxygen, Hydrogen, Nitrogen & Sulfur?
A salt bond is also a weak, physical, cross-link side bond between adjacent polypeptide chains. Salt bonds are broken by these 2 things
What are strong alkaline or acidic solutions?