1
colorless with a strong unpleasant odor used in perms
what is thyglycolic acid
sweet colorless oily substance used as a solvent and a moisturizer in skin and body creams
what is glycerin
common voc or volatile organic compound- found in hairspray
what is ethyl alcohol
seperating an atom or molecule into positive and negative ions
what is ionization
non conducters- ex wood rubber or silk
what are insulators
unit that measures how much electricity is used in 1 second
what is a watt
refers to the scientific study of hair
what is trichology
line, form,space,texture,color are all parts of what
what are the 5 basic elements of 3d hair design
distance between 2 electromagnetic waves
what is wave length
currents used in facials and scalp treatments
what are modalities
prevents excessive current from passing through a current
what is a fuse
even flowing, in 1 direction only, produced by chemical means
what s direct current
pertaining to hair
what is trichos
hair,skin,nails, and glands make up this body system
what is the integumentary system
located below the surface of the epidermis
what is the hair root
pocket or tube like depression in the scalp that contains the hair root
what is the hair follicle
thickened club like structure that forms the lower part of the hair root
what is the hair bulb
small cone shaped area at the base of the hair follicle that fits into the hair bulb and contains nerves and blood supply for hair growth
what is the derma papilla
percentage of the hair that is protein
what is 90%
layer of the hair shaft that creates shine and smooth feel of healthy hair
what is the cuticle
hair follicles, hair bulb, dermal papilla, arrector pili muscle and sebaceus glands are part of what
what are th 5 main structures of the hair root
fibrous protein core formed by elongated cells containing melanin pigment, or middle layer of the hair. changes involved in oxidation,wet setting, thermal styling and perming all take place here
what is the cortex
lubricates the skin
what is sebum
small involuntary muscle at the base of the hair follicle that causes goose bumps
what is the arrector pilli muscle
a weak physical crosslink- side bond that is easily broken by water
what is hydrogen bonds
carbon,oxygen,hydrogen,nitrogen and sulfur are 5 elements that make up what part of the body
what are hair skin tissues and nails
in hair, what does CAT represent
cantangen,the end
anagen, growth
telogen, resting
what is the growth pattern of hair
the hair shaft that emerges from the scalp, is nonliving fiber composed of this
what is keratin protein
created when disulfide bonds are broken by hydroxide chemical relaxers after the relaxer is rinsed from the hair
what are lanthionine bonds
in hairdressing it defines form and space,creates the shape,design and movement of a ahirstyle
what is line
regular pulsation or recurrent pattern of movement in a design. excrimping
what is rythm
the comparitive relationship of one thing to another
what is proportion
can be used to define texture and line in a design. can be used as accent oieces
what is haircolor
what is design texture
area surrounding the form or area the hairstyle occupies
what is space
this is the mass and general outline of a style,also referred to as volume
what is form
lines positioned between horizontal and vertical lines. used to emphasize or minimize facial features. also used to create interest. ex elongated bob
what are diagonal lines
lines with definite forward or backword movement
what are directional lines
lines parallel to the floor and create width and weight in a hair design. ex bangs or fringe
what are horizontal lines
repeating lines in a hairstyle may be straight or curved. ex crimping
what are parallel lines
hairstyle with only 1 line- lowest maintenance . ex 0 degree haircut
what are single lines
usually curved lines that are used to blend and soften horizontal or vertical lines ex layering short to long - pixie cut
what are transitional lines
sudden loss of hair in spots or round patches
what is alopecia areata
aka as end bond- chemical bond that joins amino acids to each other end to end to form polypeptide bonds
what is a peptide bond
also known as lanugo hair - short fine unpigmented downy hair
what is vellus hair
shape of the hair strand is called
what is wave pattern
horizontal and vertical lines that meet at a 90 degree angle and create a hard edge ex asymmetrical cut
what are contrasting lines
lines that are up and down, create height and length in design. ex updo
what are vertical lines
easily absorbs moisture- in chemistry- capable of combining with or attracting water
what is hydrophilic
naturally resistant to being penetrated by water
what is hydrophobic
aka hirsuites- abnormal hair growth of terminal hair where vellus hair usually grows
what is hypertrichosis
weak physical cross link side bond between adjacent polypeptide chains
what is a salt bond
technical term for split ends
what is trichoptilosis
technical term for dandruff
what is pityriasis
chemical combination of 2 or more atoms in definite or fixed proportion
what is a molecule
technical term for gray hair
what is canities
chemical combination of matter in deinite(fixed) proportions
ex water-liquid
diamond-solid
oxygen-gas
what is a pure substance
study of substances that do not contain carbon
what is inorganic chemistry
study of substances that contain carbon
what is organic chemistry
physical forms of matter.solid,liquid,gas
what is the states of matter