Hair Chemistry
The middle layer of the hair.
What is the cortex?
Lines that are parallel to the floor
What is a Horizontal line?
The five principles of hair design are proportion, rhythm, emphasis, harmony, and _____.
What is the balance?
A process that lightens and colors hair in a single application.
What is a single process haircolor?
The large, flat, triangular bone of the shoulder
What is the scapula?
A chemical side bond that is very different from the physical bond of hydrogen or salt bonds.
What is a disulfide bond?
A one-length haircut
What is a blunt or solid form haircut?
The stationary foundation of a pin curl that is closest to the scalp
What is the base?
The technical term for gray hair
What is canities?
The bones of the palm of the hand
What is metacarpals?
____ is a stable mixture of two or more mixable substances.
What is a solution?
A line that extends from the front to the back, while traveling at an angle.
What is a diagonal line?
The process of shaping and directing the hair into an S-pattern with the use of fingers, combs, and waving lotion
What is a finger wave?
The melanin found in redhair
What is pheomelanin?
The area between the apex and back of the parietal ridge
What is the crown?
The cortex or middle layer of the hair gives strength and elasticity and contributes about ____% to the overall strength of the hair.
How much is 80%?
The widest area of the head, starting at the temples and ending at the bottom of the crown
What is the parietal ridge?
Provide a strong curl with full volume
What is full (on) base curls?
The measure of the potential oxidation of varying strengths of hydrogen peroxide
What is volume?
The small, thin bones located at the front inner wall of the orbits
What are lacrimal bones?
The lowest area or part of the hair strand
What is the hair bulb?
Curved lines used to soften and blend horizontal or vertical lines
What are transitional lines?
The section of the pin curl that gives the curl its direction and movement
What is the stem?
Lighter and warmer colors are used to create the illusion of
What is volume?
The _____nerve affects the skin of the forehead, scalp, eyebrow, and upper eyelid.
What is superorbital?